ICPMAT-2022

16th International Conference on

Physical Properties and Applicationof Advanced Materials

November 21-23, 2022, Shanghai, China

Organized by:Materials Genome Institute of Shanghai University
Zhejiang Laboratory

Shanghai Physical Sociaty
Shanghai Laue Science and Technology Institute16th International Conference on the Physical Properties andApplication of Advanced Materials (ICPMAT2022)
The International Conference on the Physical Properties and Application ofAdvanced Materials (ICPMAT) is an annual conference founded by Shanghai
University, University of Toyama and Japan Institute of Metals, and is organized
by a selected host country. The conference focuses on fundamental andapplied researches and current developments in physics and materials science,
including raw materials, structural materials, functional materials, advanced
characterization techniques and computational materials science. The
conference aims to further explore the topics, bring the community closer
together, and foster discerning discussions and new collaborations.
ICPMAT2022 will be hosted by Shanghai University and Zhejiang Laboratory,
China. The conference will be held as a hybrid event, where local participants
will attend in person in the city of Shanghai, and overseas participants arewelcome to travel to China, but if not possible, they can choose to attend
virtually. More information can be found on the conference website:
https://icpmat2022.scievent.com.
Conference Topics
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Advanced Functional Materials
Computational Materials
Data Driven Materials Design
Metallurgical Engineering
Quantum Materials
Structural Materials

Conference Chair

Jun-Yi Ge, Shanghai University, China

Co-Chairs

Marco Actis Grande, Politecnico di Torino, Italy
Atsushi Saiki, University of Toyama, Japan1

Organized by

Shanghai University, China
Zhejiang Laboratory, China

Co-organized by

University of Toyama, JapanInternational Committee Member:

Chair: Jincang Zhang, Shanghai University and Zhejiang Laboratory, China
Co-chair: Katsuhiko Nishimura, University of Toyama, Japan
Guang-hui Min，Shandong University, China
Marco Actis Grande，Politecnico di Torino, Italy
Tetsuo Aida，University of Toyama, Japan
Chaiyasit Banjongprase，Chiang mai University, Thailand
Jana Bidulska，Technical University of Kosice, Slovakia
Shixun Cao，Shanghai University, China
Torranin Chairuangsri，Chiang mai University, Thailand
Renchao Che，Fudan University and Zhejiang Laboratory, China
R. Holmestad，Norwegian University of Science and Technology, Norway
Yuukou Horita，University of Toyama, Japan
Wayne D. Hutchison，University of New South Wales, Australia
Takuya Ishimoto，University of Toyama, Japan
Dang Quoc Khanh，Hanoi University of Science and Technology, Vietnam
Pham Mai Khanh，Hanoi University of Science and Technology, Vietnam
Tibor Kvackaj，Technical University of Kosice, Slovakia
Malgorzata Lewandowska，Warsaw University of Technology, Poland
Zhe Li, Harbin Institute of Technology (Shenzhen), China
Le Van Lich，Hanoi University of Science and Technology, Vietnam
Lidia Lityńska Dobrzyńska，Polish Academy of Sciences, Poland
Knut Marthinsen, Norwegian University of Science and Technology, Norway
Calin D. Marioara, SINTEF, Norway
Kenji Matsuda，University of Toyama, Japan
Sarka Mikmekova, Institute of Scientific Instruments of the CAS, v.v.i., Czech RepublicIlona Mullerova, Czech Academy of Sciences, Czech Republic2

Mitsuhiro Murayama，Virginia Tech, USA
Katsuhiko Nishimura，University of Toyama, Japan
Norio Nunomura，University of Toyama, Japan
Hedeki Ono，University of Toyama, Japan
Kedsarin Pimraksa，Chiang mai University, Thailand
Wei Ren，Shanghai University, China
Jincang Zhang，Shanghai University and Zhejiang Laboratory, China
Seiji Saikawa，University of Toyama, Japan
Atsushi Saiki，University of Toyama, Japan
Toshiya Shibayangi，University of Toyama, Japan
Gary J. Shiflet，University of Virginia, USA
Mirosław Stygar，AGH University of Science and Technology, Poland
Yutaka Takaguchi，University of Toyama, Japan
Tohru Watanabe，University of Toyama, Japan

Organizing Committee

Chair：Guixin Cao，Shanghai University, China
Co-chair：Kenji Matsuda, University of Toyama, Japan
Yong Zou，Shandong University, China
Jie Wang，Zhejiang Laboratory and Zhejiang University, China

Members:
Jian Yu, Donghua University, China
Sheng Sun, Shanghai University, China
Yifeng Cheng, Zhejiang Laboratory, China
Zhenjie Feng, Shanghai University, China
Fei Chen, Shanghai University, China
Jinke Bao, Shanghai University, China
Yunhong Zhao, Zhejiang Laboratory, China
Rongrong Jia, Shanghai University, China
Wenlai Lu, Shanghai University, China

General Secretary
Baojuan Kang, Shanghai University, China

3

Scientific Programs
Information for Presenter and Chair
Oral Sessions
All speakers must report to the session chairs prior to the beginning of thesession.
The allocation for each oral presentation is 25 minutes.
a) 20 minutes for the presentationb) 5 minutes for Q＆A
Guideline for the Oral Sessions
The Chair of each oral session is expected to enter in the VooV meeting room(each conference number can be found in the program) at least 10 minutes
prior to the session.
Due to the impact of COVID-19, the entire meeting will be conducted online.
Each oral speaker should open your MS PowerPoint in advance. After the
Q&A session of the previous speaker, you should follow the chairman's
instruction to share your screen and start the presentation.
Due to the large number of participants this time, the meeting schedule istight, each speaker should present his/her work in time.
Poster Sessions
There are three parallel poster sessions going on at the same time. All poster
speakers must report to the session chairs prior to the beginning of thesession.
The allocation for each poster presentation is 7 minutes.
a) 5 minutes for the presentation
4b) 2 minutes for Q＆A
Guideline for the Poster Sessions
The Chair of each oral session is expected to enter in the VooV meeting room(each conference number can be found in the program) at least 10 minutes
prior to the session.
Due to the impact of COVID-19, the entire meeting will be conducted online.
Each oral speaker should open your MS PowerPoint in advance. After the
Q&A session of the previous speaker, you should follow the chairman's
instruction to share your screen and start the presentation.
Due to the large number of participants this time, the meeting schedule istight, each speaker should present his/her work in time.

5Program at a glance
DAY-1:

21 November 2022（Monday）

21 November, 2022 14:00-14:25 (Beijing Time) Conference Opening

VooV Conference Number： 952-395-950

Password: 2022

Chairman: Junyi Ge
Date

Institution

Title

Opening speech 01 14:00-14:05

Junyi Ge

Shanghai University

Welcome Address

Opening speech 02 14:05-14:15

Kenji Matsuda

University of Toyama

Openning SpeechOpening speech 03 14:15-14:25

Yong Zou

Shandong University

Openning Speech

Speech by experts and leaders

Reporter

21 November, 2022 14:25-17:05 (Beijing Time) The conference report
Session 1

Chairman：Kenji Matsuda
Institution

Title

O1-Oral Talk 14:25-14:50

Wei RenShanghai University

Unconventional ferroelectricity and physical effects in simple binary compounds

O2-Oral Talk 14:50-15:15

Abrar Ahmed

University of Toyama

TEM observation of Al-Zn-Mg alloy with low Zn/Mg ratio

O3-Oral Talk 15:15-15:40

Jiong Yang

Shanghai University

Report number and time

2022/11/21pm

Reporter

High-Throughput Design of Thermoelectrics Based on MatHub-3d Repository and Search of the Key Features
Coffee Break 15:40-15:50

Session 2

Chairman：Marco Actis Grande

Report number and time

ReporterInstitution

Title

O4-Oral Talk 15:50-16:15

Mirosław Stygar

AGH University of Science and Technology

The structures and properties of functional high-entropy spinel materials

O5-Oral Talk 16:15-16:40

Vladimir Gladilin

Antewerp University

Vortices in lattices of nonequilibrium photon condensates

O6-Oral Talk 16:40-17:05

Knut Marthinsen

Norwegian University of Science and Technology

DAY-2:

Orientation dependent Zener-pinning of sub-grains during recovery and recrystallization of an Al-Mn alloy

22 November 2022（Tuesday）

22 November, 2022 08:30-17:00 (Beijing Time) The conference report

VooV Conference Number： 592-633-959

Password: 2022

Session 1 Chairman：Yong Zou
Date

Report number and time

ReporterO7-Oral Talk 08:30-08:55

Title

Institution

Zhenjie Feng

Shanghai University

Development of Laboratory Atomic Pair Distribution Function X-ray diffractometer

O8-Oral Talk 08:55-09:20

Yu GaoShandong University

Machine learning accelerated design of non-equiatomic Refractory High Entropy Alloys based on First principles calculation

O9-Oral Talk 09:20-09:45

Yalei Huang

Shanghai University

O10-Oral Talk 09:45-10:10

Hiroki Saito

University of Toyama

Anomalous resistivity upturn in the van der Waals ferromagnet Fe 5 GeTe 2
Effect of total amount of Cu, Mg and cold rolling on age precipitation of Al-Cu-Mg alloys
Coffee Break 10:10-10:20

2022/11/22am Session 2 Chairman：Shixun Cao

Title

Report number and time

ReporterInstitution

O11-Oral Talk 10:20-10:45

Haruki Tsukuda

University of Toyama

Microstructural observation of Al-based TiAl composites fabricated by 3DPC

O12-Oral Talk 10:45-11:10

Xiaoxuan Ma

Shanghai University

Tuning spin reorientation transition and spin switching in praseodymium-erbium orthoferrites single crystals

O13-Oral Talk 11:10-11:35

Auekarn Chuwongwittaya

Chiang Mai University

Geopolymer/Zeolite P Composites from Combustion By-products
Lunch Break 11:35-13:00

Session 3 Chairman：Shenghao Wang
Date

Report number and time

Reporter

Title

Institution

O14-Oral Talk 13:00-13:25

Xinyu Yao

Shanghai University

Orbital two-channel Kondo effect in antiferromagnetic Weyl semimetal Mn3 Ge

O15-Oral Talk 13:25-13:50

Norikazu Jinno

University of Toyama

Effect of Sn on Segregation Behavior of Si during Solidification of Molten SteelO16-Oral Talk 13:50-14:15

Wanting Yang

O17-Oral Talk 14:15-14:40

Jinke Bao

Shanghai University

Spin and charge density waves in the quasi-one-dimensional KMn6 Bi5

O18-Oral Talk 14:40-15:05

Chang Liu

Shandong University

Effect of Nb content on the microstructure and corrosion resistance of FeCoCrNiNbx high entropy alloy in chloride ion environment

Shanghai University

The spin-switching and magnetocaloric research in Tb doped YbFeO3 single crystal

Coffee Break 15:05-15:15
Parallel Poster Session 1 Chairmen：Guixin Cao, Fei Chen

VooV Conference Number： 592-633-959

ReporterInstitution

Title

P1-Poster 15:15-15:22

Keisuke Maida

University of Toyama

Effect of Injection Molding Conditions on Dimensional Accuracy and Mechanical Properties of Carbon Fiber Reinforced PEEK

P2-Poster 15:22-15:29

Yanhong Chen

Shanghai University

Organic Lead-based Halide Perovskite Single Crystal for High-performance Photodetector

P3-Poster 15:29-15:36

Shun Kawamata

University of Toyama

Microstructure evolution of Al-1.0Mg-0.6Si(mass%) alloys with homogenization treatment

P4-Poster 15:36-15:43

Huan SongShanghai University

Spin switch effect of TmFeO3 under low magnetic field

P5-Poster 15:43-15:50

Masahiro Yamagami

University of Toyama

Hot electron extraction in SWCNT/TiO2 for photocatalytic H2 evolution from water

P6-Poster 15:50-15:57

Zhiqiang Sun

Shanghai University

Spin switching effect in Nd0.8Pr0.2FeO3 single crystal

P7-Poster 15:57-16:04

Naru Akiyama

University of Toyama

Evaluation of electrochemical properties of batteries prepared by aerosol deposition method

P8-Poster 16:04-16:11

Shuang Zhu

Shanghai University

Magnetodielectric effect and magnetoelectric coupling of Co3NiNb2O9 single crystal

University of Toyama

Growth of lithium niobate single crystals using the floating zone method and changes in physical properties due to Na addition

P10-Poster 16:18-16:25

Lixin Gao

Shanghai University

Flux Pinning Evolution of Pb Multilayer Thin Films in the purely repulsive interaction system

P11-Poster 16:25-16:32

Yusuke Sekiguchi

University of Toyama

Mechanical properties and precipitation of Al-4mol%Zn-2mol%Mg-1mol%Cu alloy

P12-Poster 16:32-16:39

Weibin Wu

Shanghai University

Crystal growth and physical properties evolution in Ni1-xCoxTe2-δ system

P13-Poster 16:39-16:46

Sumitaka Yamaguchi

University of Toyama

P14-Poster 16:46-16:53

Jingyu He

Shanghai University

The effect of granularity on superconducting properties of Pb films

P15-Poster 16:53-17:00

Shoya Ukita

University of Toyama

DSC analysis and TEM microstructure observation of Al-1.0Mg2Ge alloy

P9-Poster 16:11-16:18

Shotaro Kawara

Superconductive Property of Nb3Al/Al Composite Materials

Parallel Poster Session 2 Chairmen：Knut Marthinsen, Jinke Bao
Report number and time
P16-Poster 15:15-15:22

2022/11/22pm

Password：2022

Report number and time

Reporter
Tomoki Miyazono

VooV Conference Number： 602-454-611

Password：2022

Institution

Title

University of Toyama

Yttrium and Praseodymium doped proton conducting electrolytes with improved sinterability

P17-Poster 15:22-15:29

Jiafeng Chen

Shanghai University

Superconducting state properties of Cu-doped NbTe 2 single crystals

P18-Poster 15:29-15:36

Kodai Yabashi

University of Toyama

Effect of injection molding conditions of carbon fiber reinforced PEKEKK resin on retainer
Microstructure and microwave absorption properties of FeCoNiCuGe high-entropy alloys
Investigation of manufacturing conditions of single roll rapidly solidified ribbon for anode materials of Mg rechargeable batteries by using
thermal-hydraulics CAE
Magnetic phase transitions and giant magnetic coercivity in Mn2.45Fe0.58Sn0.97 single crystals
Effect of process parameters on anode activity of Mg-6%Al-3%Ca alloy ribbons manufactured by single-roll atmospheric rapid solidification
method for Mg rechargeable batteries
High-throughput X-ray characterization of discrete component samples of rare earth-doped thermal barrier coating materials

P19-Poster 15:36-15:43

Yifeng Zhang

Shanghai University

P20-Poster 15:43-15:50

Yuichi Kirimoto

University of Toyama

P21-Poster 15:50-15:57

Weihao Shen

Shanghai University

P22-Poster 15:57-16:04

Kosuke Fuke

University of Toyama

P23-Poster 16:04-16:11

Guang Wu

P24-Poster 16:11-16:18

Ginji Ota

University of Toyama

Effect of Ag Addition on Corrosion Properties of Mg-Al Alloys

P25-Poster 16:18-16:25

Yuzhe Pan

Shandong University

Stress corrosion behavior of friction stir welding joint of 7N01 aluminum alloy

P26-Poster 16:25-16:32

Tomohiro Fujimoto

University of Toyama

B substitution effect on magnetic properties of HoAl2

Shanghai University

P27-Poster 16:32-16:39

Shuting Yu

Shanghai University

Optimization of the mechanical properties of SAC105-based solder alloys via machine learning

P28-Poster 16:39-16:46

Nguyen Khanh Huyen

University of Toyama

MoSe2-sensitized water splitting assisted by C60-dendron on the basal surface

P29-Poster 16:46-16:53

Erika Hida

University of Toyama

P30-Poster 16:53-17:00

Syoma Yoshinaga

University of Toyama

Magnetic properties of Al-4%Cu(-Mn, -Fe) alloy
Magnetocaloric properties of Ho1-xGdxB2

Parallel Poster Session 3 Chairmen： Zhenjie Feng, Rongrong Jia
Report number and time
P31-Poster 15:15-15:22

Reporter
Chuanyi Wu
Yuto Arata

VooV Conference Number：292-880-529
Institution

Title

Shanghai University

Superconductivity of La (111)/Si (100) thin films

Password：2022

University of Toyama

Effect of rare earth addition on sodium tantalate prepared by solution process

P33-Poster 15:29-15:36

Tianyuan Li

Shanghai University

Effect of alloying elements on the microstructure and properties of SnAgCu based lead-free solder alloys

P34-Poster 15:36-15:43

Shuhei Murakata

University of Toyama

Microstructure observation of Al-1.0mass%Mg2Ge-(0.4mass% Si) alloys aged at 473K

P35-Poster 15:43-15:50

P32-Poster 15:22-15:29

Jiajie Zhang

Shanghai University

P36-Poster 15:50-15:57

Jun Ezura

University of Toyama

TEM observation of Mg-2.2Zn-0.2In alloy aged at 473K

P37-Poster 15:57-16:04

Luman Hou

Shanghai University

Reveal of free radicals in manganese-based catalysts and their roles during selective catalytic reduction of nitrogen oxide

Long-range ferromagnetic ordering and novel phase transitions in macroscopic artificial kagome particle ice

P38-Poster 16:04-16:11

Takashi Hashizume

University of Toyama

Synthesis of micro sized hollow Ceria particles prepared by spray dry pyrolysis

Daichi Nakato

University of Toyama

Effect of Mo on Pitting Corrosion Resistance of Martensitic Stainless Steels

P40-Poster 16:18-16:25

Yota Yamada

University of Toyama

Effect of Cu content on electrochemical activity in Mg-Cu binary alloys prepared by single role rapid solidification method

P41-Poster 16:25-16:32

Yangzhou Wang

Shanghai University

High-throughout synthesis of La1-xSrxTiO3 thin film and its characterizations

P42-Poster 16:32-16:39

Hideki Minami

University of Toyama

Effect of microstructure on hardness of Mg-Sc-Zr alloys with α + β dual phase

P39-Poster 16:11-16:18

6

DAY3:

23 November 2022（Wednesday）

23 November, 2022 09:00-16:50 (Beijing Time) The conference report

VooV Conference Number： 345-240-020

Password: 2022

Session 1 Chairman：Jiong Yang
Date

2022/11/
23am

ReporterInstitution

Title

O19-Oral Talk 09:00-09:25

Kai ChongShandong University

Thermal stability and corrosion behavior of a novel Zr22.5 Ti22.5 Hf22.5 Ni22.5 Ta10 high-entropy amorphous alloy

O20-Oral Talk 09:25-09:50

Chenfei Shi

Shanghai University

The microstructure and magnetic properties of Fe ion doped GdCrO 3

O21-Oral Talk 09:50-10:15

Atsushi Saiki

Report number and time

University of Toyama

Surface modification of aluminum alloy by local laser irradiation

O22-Oral Talk 10:15-10:40

Tian He

Shanghai University

Flux pinning behavior and related physical mechanism of CaKFe 4 As 4 superconductor

O23-Oral Talk 10:40-11:05

V. N. Hai

University of Toyama

Effect of thermal aging on the properties and microstructure of Al-Cu-Mg-Si alloy
Lunch Break 11:05-12:30

Session 2 Chairman：Junyi Ge
Date

Report number and time

Reporter

Title

Institution

O24-Oral Talk 12:30-12:55

Anlei Zhang

Shanghai University

Electric transport properties of ZrB12 micro-bridge

O25-Oral Talk 12:55-13:20

Yuito Koishikawa

University of Toyama

Data-driven techniques for high-hardness Al-Mg-Si series alloy to obtain optimal chemical composition

O26-Oral Talk 13:20-13:45

Jiaying Zhang

Shanghai University

Phase diagram for Fe ySexTe 1-x superconductors

O27-Oral Talk 13:45-14:10

Ting Xue

Shandong University

Thermophysical and mechanical properties of Al2O3-doped YTaO4 ceramic as potential thermal barrier coating

O28-Oral Talk 14:10-14:35

Shenghao Wang

Shanghai University

Interfacial and opto-electronic properties of halide perovskites: from toxic to eco-friendly
Coffee Break 14:35-14:45

2022/11/ Session 3 Chairman：Wei Ren
23pm
Report number and time

Reporter

Title

Institution

O29-Oral Talk 14:45-15:10

Guixin Cao

Shanghai University

Field-driven surface state and topological nodal lines in layered semimetals

O30-Oral Talk 15:10-15:35

Tadayoshi Tsukeda

University of Toyama

Improvement on electrochemical activity of anode materials for magnesium rechargeable batteries by laser processing

Fei Chen

Shanghai University

O32-Oral Talk 16:00-16:25

Jiasen Han

Shandong University

Improving CMAS-corrosion resistance of YSZ-based thermal barrier coatings with Al2 O3 addition

O33-Oral Talk 16:25-16:50

Mingqian Zhang

Shanghai University

In-situ conversion of amorphous carbon to graphene enhances the oxidation resistance of dendritic copper powder

O31-Oral Talk 15:35-16:00

Electronic structure of FeS superconductor

23 November, 2022 16:50-17:10 (Beijing Time) Conference Closing
Chairman: Junyi Ge
Date

Speech by experts and leaders

Title

Closing speech 01 16:50-17:00

Reporter
Junyi Ge

Institution

2022/11/23pm

Shanghai University

Closing Address

Closing speech 02 17:00-17:10

Marco Actis Grande

Politecnico di Torino

Closing Speech

7

Abstract Book

O1- Unconventional ferroelectricity and physical effects in
simple binary compounds
W. RenDepartment of Physics, Shanghai University 200444, Shanghai, China.

First-principles calculations are performed to investigate ferroelectricity in some binary compounds,
including bilayer two-dimensional (2D) hexagonal boron nitride (h-BN) and rocksalt oxide family (AO
with A=Cd, Ba, Sr, Ca, Mg, etc.) via the application of biaxial strain. The origins of such unconventional
ferroelectricity are discussed from the lattice perspective and electronic structure properties. Thesefindings have the potential to motivate the study of simple materials possessing ferroelectricity andpiezoelectricity that may lead to novel devices.
Email: renwei@shu.edu.cn

8

O2-TEM observation of Al-Zn-Mg alloy with low Zn/Mg
ratio
A. Ahmed1‡, S. Lee2, T.Tsuchiya2, Kenji Matsuda2†, K. Nishimura2, N. Nunomura2, H. Toda3, K.
Hirayama4, K. Shimizu5, M. Yamaguchi6, T. Tsuru6, M. Itakura6
1Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, 930-8555, Japan
2 Faculty of Sustainable Design, University of Toyama , Toyama, Toyama, 930-8555, Japan
3 Department of Mechanical Engineering, Kyushu University, Fukuoka, 819-0395, Japan
4 Department of Materials Science and Engineering, Kyoto University, Kyoto, 606-8501, Japan
5 Department of Physical Science and Materials Engineering, Iwate University, Iwate, 020-8551, Japan
6 Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, 319-1195, Japan

The influence of the Zn/Mg ratio on the microstructure and mechanical properties of Al-Zn-Mg alloys
with a low Zn/Mg ratio has been investigated through microhardness tests and transmission electron
microscopy (TEM).

Due to their excellent mechanical qualities and formability, Al-Zn-Mg alloys

have been widely used in structural load-bearing components of the automotive and aerospace industries.
Precipitation strengthening was the primary strengthening mechanism, similar to other heat-treatablealloys. Al-Zn-Mg alloys must be developed with both the overall Zn and Mg contents and the Zn/Mg
ratio in thought to work at their best. According to various researchers, the major strengthening phaseoccurred after peak ageing when the Zn/Mg ratio was between 2 and 3, and the T phase when the ageing
temperature was over 200°C. Due to the excellent strengthening effect of the η′ phase, extensive researchhas been done on its precipitation sequence, composition, atomic structure, and phase transformation
mechanism for many years. In contrast, the T′ phase of Al-Zn-Mg alloys, which has a weakening effect,
has received much less attention. T phase has a body-centered cubic structure, a=1.416 nm for the lattice
parameter, and Mg32(Al, Zn)49 or Mg3Zn3Al2 for the stoichiometry. The most significant precipitates
were considered to be the MgZn2 phase (η phase) and its metastable phase (η′ phase). In Al-Zn-Mg alloys
with low Zn and high Mg content, otherresearch also discovered that there were several Mg32(Al, Zn)49

phase (T phase) and its metastable phase (T′ phase). For this study, I decided to use Al-Zn-Mg alloys
with a Zn/Mg ratio of 0.71. According to the observations, the alloy with a Zn/Mg ratio of 0.71 aged at
200 °C for 2000 minutes had the maximum Vickers hardness. According to TEM observations, theexamined alloy's strengthening precipitates were usually T′ or T phase.
Keywords: Microstructure structure, Microhardness, Precipitation.
Email: †ikenolab@sus.u-toyama.ac.jp

9

O3 - High-Throughput Design of Thermoelectrics Based on
MatHub-3d Repository and Search of the Key Features
J. Yang1,2*
1Materials Genome Institute, Shanghai University, Shanghai, 200444, China；
2Zhejiang Laboratory, Hangzhou, Zhejiang 311100, China

Since 2011, there have been emerging several computational material databases, including the Materials
Project, AFLOW, Atomly, and MatHub-3d(2d) from MGI, Shanghai University. MatHub-3d aims at theelectrical and thermal transport properties; the repository contains over 80,000 inorganic structures, over
30,000 electronic structures, and over 10k electrical transport properties.[1] This talk will cover several
recent high-throughput screening works for new thermoelectrics based on the MatHub-3d. In the searchof new thermoelectrics, besides the screening from direct calculations of transport properties, the search
can also be accelerated by the key features. Based on the previous study that the carrier type ofsemiconductors relate to the band edge energy position, we propose the strategy of searching n-type Cucontained compounds by looking for compounds with low-energy conduction band minima. Follow-up
theoretical and experimental studies confirm this strategy, and obtain a new thermoelectric compound
CuIn5Se8 with experimentally ZT of 0.84.[2] In another study, we propose a new concept of “Functionalunit design”, borrowed from the “fragment design” in the search of new drug. A linear triatomic bonding
is found to be an effective thermoelectric functional unit. This unit is theoretically proved to cause large
lattice anharmonicity and band anisotropy, both favoring the thermoelectric performance. The predictedcompound K5CuSb2 has a ZT value of 1.3.[3] The two case studies demonstrate the powerfulness of the
combination of material repository and key feature search in accelerating the high-throughput works.
Keywords：MatHub-3d; Key feature; Energy position; Functional-unit design
Email: jiongy@t.shu.edu.cn

10O4- The structures and properties of functional highentropy spinel materials
Mirosław Stygar1‡, J. Dąbrowa1, M. Zajusz1, E. Durda1, M. Moździerz2, K. Matsuda3
1AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Kraków, Poland
2AGH University of Science and Technology, Faculty of Energy and Fuels, Kraków, Poland
2University of Toyama, Faculty of Sustainable Design, Toyama, JapanThe synthesis, structure, and properties of the high-entropy spinels are discussed on the example ofcompositions from the Co-Cr-Fe-Mg-Mn-Ni-O system. The single-phase (Co,Cr,Fe,Mn,Ni)3O4,(Cr,Fe,Mg,Mn,Ni)3O4, and (Co,Cr,Fe,Mg,Mn)3O4 materials are obtained, together with the selected
quaternary subsystems. The stability of the materials, both in terms of the temperature and oxygen partialpressure dependence is evaluated, showing the profound influence of these parameters on the spinelforming capabilities of the investigated systems, potentially providing means for further tailoring of theirstructure, including the transition between Fd-3m spinel symmetry and Fm-3m rocksalt one.
Thermomechanical behavior of all single-phase compositions is remarkably similar, with the values ofthermal expansion coefficient being in the range of 8.8 to 9.8·10 K-1, making the materials potentiallyinteresting in terms of compatibility with materials used in the solid oxide fuel cell technology (SOFC),
especially interconnects. The temperature dependence of the electrical conductivity indicates thesemiconducting character, with a clearly visible change of the energy activation ca. 400 °C. To provide
a further understanding of these systems, the initial assessment of the cationic occupancy within the tetraand octahedral lattice sites is carried out for selected compositions, through the use of the Mossbauer
spectroscopy measurements combined with the density functional theory ab initio calculations (DFT).
The

results

show distinctively different

tendencies

betweenquaternary

subsystems

and(Co,Cr,Fe,Mn,Ni)3O4 composition. In the case of the former ones, a preferential occupancy of the latticesites appears to be energetically favourable, while for the quinary composition, the entropic configuration
on both sublattices turns out to be characterized by the lowest energy. The potential for tailoring theoccupancy of cationic lattice sites by the introduction of the specific cations is discussed.
Based on the analogy to conventional spinels, as well as the determined electrical and thermomechanicalproperties of the studied high-entropy spinels, their application as protective-conductive coatings forinterconnect elements in SOFCs is proposed. Taking into account some of the established features of thehigh-entropy systems, such as lattice distortion, potentially affecting the rate of cations’ diffusion, it canbe postulated that they may carry significant potential with regard to this technology, especially in termsof corrosion protection and suppression of the deleterious Cr-poisoning effect. The initial studies
regarding the possibility of applying such coatings on the Crofer 22APU ferritic stainless steel substrate
are carried out, together with the preliminary performance assessment of the obtained ceramic/metallic
system.
Keywords: High entropy oxide, Spinel structure, Solid Oxide Fuel Cell, Interconnects, Conductive coating
Email: ‡stygar@agh.edu.pl11

O5-Vortices in lattices of nonequilibrium photon
condensates
Vladimir N. Gladilin‡ and Michiel Wouters
TQC, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium

The creation of photonic Bose-Einstein condensates (BECs), formed due to thermalization of cavity
photons through repeated absorption and emission by dye molecules, has presented an invitation to study
these systems from a quantum fluid perspective. For superfluids, vortex excitations play a crucial role ina variety of phenomena such as the Berezinskii–Kosterlitz–Thouless (BKT) transition, Kibble–Zurek
scenario, formation of vortex lattices, and the drag force on objects moving through a superfluid. Here
we present the results of our theoretical study of vortices in arrays of photon condensates. Because ofcavity mirror losses, optical BECs need constant pumping by an excitation laser in order to reach asteady state and experimentally realized photon condensates are therefore driven-dissipative systems.
We show that, even when interactions are negligible, as is the case in current experiments on photonic
BECs, pumping and losses can lead to a finite vortex core size. While some properties of photoncondensate vortices, such as their self-acceleration, the formation of outward particle flows from thevortex cores, and the generation of vortex pairs by a moving vortex resemble those in lasers andinteracting exciton-polariton condensates far from equilibrium, in several aspects they differ frompreviously studied systems: the vortex core size is determined by the balance between pumping andtunneling, the core appears oblate in the direction of its motion, and new baby-vortex pairs canspontaneously nucleate in the core region. We also demonstrate that, due to outward currents from thevortex cores, in combination with quasicircular motion of self-accelerated vortices, a repulsive gas of
low-mobility vortices and antivortices can be formed, where the pair annihilation is dramatically slowed
down. At the same time, our numerical and analytical investigations of the BKT transition in a latticecondensate of noninteracting photons show that the vortex-free phase is actually stabilized by driving
and dissipation.
Keywords: Nonequilibrium systems, Bose-Einstein condensates, Cavity resonators, Vortices in superfluids
Email: ‡vladimir.gladilin@uantwerpen.be12O6-Orientation dependent Zener-pinning of sub-grains
during recovery and recrystallization of an Al-Mn alloyHåkon W Ånes1, Antonius T.J. van Helvoort2, Knut Marthinsen1, ‡1Department of Materials Science and Engineering, Norwegian University of Science and Technology(NTNU), N-7491 Trondheim, Norway.
2Department of Physics, Norwegian University of Science and Technology (NTNU)), N-7491 Trondheim, Norway

Correlated analysis of (sub)grains and particles in alloys is important to understand transformation
processes and control material properties. A multimodal data fusion workflow directly combining
subgrain data from electron backscatter diffraction (EBSD) and particle data from backscatter electron(BSE) images in the scanning electron microscope has therefore been developed. Correlated analysis ofsecondary phase particles down to 0.03 μm in diameter and subgrains and subgrain boundaries is enabledby the higher fidelity of the BSE images. The workflow is demonstrated on a cold-rolled and recovered
Al-Mn alloy, where constituent particles formed during casting and dispersoids formed during
subsequent heating affect recovery and recrystallization upon annealing. The multimodal dataset enables
statistical analysis including subgrains surrounding constituent particles and dispersoids' location withrespect to subgrain boundaries. Counting dispersoids at subgrain boundaries shows a lower Smith-Zenerdrag for P-oriented subgrains ({011}<122>) (and to some extent also ND-rotated Cube) as compared toother typical recrystallization components, notably Cube, thus bringing clues to the strong P-texture often
observed in AlMn alloys in conditions of strong concurrent precipitation.
Keywords: Al-Mn alloy, Recovery and recrystallization, Correlated SEM BSE/SEM-EBSD analysis, Dispersoidsubgrain boundary correlations, Zener pinning
Email: ‡knut.marthinsen @ntnu.no13

O7-Development of Laboratory Atomic Pair Distribution
Function X-ray diffractometer
Z. J. Feng 1,2,3,4*
1Materials Genome Institute, Shanghai University, Shanghai, 200444, China
2Zhejiang Laboratory, Hangzhou 311100, China
3Shanghai Laue Sci. & Tech. Institute, Shanghai, 200444, China
4Shanghai Key Laboratory of High Temperature Superconductors, Department of Physics, Shanghai University,

Shanghai, 200444, China

In recent years, with the rapid development of science and technology, the application field ofdiffractometer is expanding rapidly. The demand for the high performant diffractometer is higher andhigher, so it is necessary to develop more advanced diffractometer. On the other hand, the technology of
the core key components of domestic X-ray diffractometer has made great progress, which provides a
hardware basis for the research and development of domestic high-performance X-ray diffractometer.
The superposition of these two factors provides an opportunity for us to develop domestic highperformance X-ray diffractometer. This lecture mainly introduces the development of domestic key
components and domestic high-performance fast X-ray diffractometer to meet the needs of in-situ fast
X-ray diffractometer, material genome engineering high-flux diffractometer and atomic distributionfunction analysis technology.
Keywords: Materials Genome Initiative; High throughput; atomic pair distribution function; PDF
Email: fengzhenjie@shu.edu.cn

14

O8-Machine learning accelerated design of non-equiatomic
Refractory High Entropy Alloys based on First principles
calculation
Y. Gao1, Y. Zou*2
1School of Materials Science and Engineering, Shandong University, Jinan, Shandong, 250061, China
2Shandong Engineering & Technology Research Center for Modern Welding, Shandong University，

Jinan,

Shandong, 250061, China

The properties of High Entropy Alloys (HEAs) strongly depend on the composition and content ofelements. However, it was difficult to obtain the optimized element composition through the traditional"trial and error" method. The non-equiatomic HEAs have a large range for composition exploration bychanging the content of elements, but the current research methods are difficult to analyze
comprehensively. In this work, the prediction model with high accuracy is established by mixture design,
the first principles calculation and machine learning. The model is used to predict the elastic properties
and Poisson's ratio of non-equiatomic Mo-Nb-Ta-Ti-V HEAs, and the prediction results agree well withexperimental data. The optimal element composition range of elastic properties and Poisson’s ratio could
be obtained. The influence of elements on the elastic properties and Poisson's ratio is analyzed throughthe calculation of features' importance. The results show that the content of Ti has the greatest
contribution to the elastic properties and Poisson's ratio of the alloy. This model can not only obtain alarge amount of data quickly and accurately but also help us to establish the relationship between element
content and mechanical properties of non-equiatomic Mo-Nb-Ta-Ti-V RHEAs and provide theoreticalguidance for experiments.
Keywords: Non-equiatomic refractory high entropy alloys; The first-principles calculation; Machine learning;
Elastic properties
Email: yugao08@outlook.com

15

O9-Anomalous resistivity upturn in the van der Waals
ferromagnet Fe5GeTe2
Y. L. Huang1, X. Y. Yao1, F. Y. Qi1, W. H. Shen1, G. X. Cao1, 2, ‡1Materials Genome Institute, Shanghai University, 200444 Shanghai, China
2Zhejiang Laboratory, Hangzhou 311100, China

FenGeTe2 (n = 3, 4, 5) have recently attracted increasing attention due to their two-dimensional van der
Waals characteristic and high temperature ferromagnetism, which make promises for spintronic devices.
The Fe(1) split site is an important structural characteristic of Fe5GeTe2 which makes it very different
from other FenGeTe2 (n = 3, 4) systems. The local atomic disorder and short-range order can be inducedby the split site. In this work, the high-quality van der Waals ferromagnet Fe5GeTe2 single crystals weregrown to study the low-temperature transport properties. We found a resistivity upturn below 10 K. The
temperature and magnetic field dependence of the resistivity are in good agreement with a combinationof the theory of disorder-enhanced three-dimensional electron–electron and single-channel Kondo effect.
The Kondo effect exists only at low magnetic field 𝐵 < 3 𝑇, while electron-electron dominates theappearance for the low-temperature resistivity upturn. We believe that the enhanced three-dimensional
electron–electron interaction in this system is induced by the local atomic structural disorder due to thesplit site of Fe(1). Our results indicate that the split site of Fe plays an important role for the exceptionaltransport properties.
Keywords: Fe5GeTe2, Electron-electron interaction, Kondo effect
Email: ‡guixincao@shu.edu.cn

16O10-Effect of total amount of Cu, Mg and cold rollingon age precipitation of Al-Cu-Mg alloys
H. Saito1, V. N. Hai1, T. Tsuchiya2, S. Lee2, S. Ikeno3, and K. Matsuda2, †1Graduate School of Science and Engineering, University of Toyama, Toyama, 930-8555, Toyama, Japan
2 Faculty of Sustainable Design, Department of Materials Design and Engineering, University of Toyama , Toyama,930-8555, Toyama, Japan
3Professor emeritus, University of Toyama, Toyama, Japan

Al-Cu-Mg alloy are cold rolled as 2xxx series aluminum alloys, have been studied to improve andenhance their mechanical properties by using controlling microstructures. Due to its excellent thermal
stability and high strength, it is widely used as a high-strength aluminum for the aerospace industry andstructures. The aging precipitation process of the Al-Cu-Mg alloy is as follows: supersaturated solid
solution→ G.P. zone→ θ’ phase→ θ phase ,or supersaturated solid solution→ G.P.B. zone→ S’ phase→
S phase depends on their chemical compositions and heat treatment conditions. It is reported that Al-CuMg alloys precipitate Ω phase (Al2Cu) with θ’ phase (Al2Cu) and S’ phase (Al2CuMg). Many of reports
are available that the mechanical properties to of 2xxx series aluminum alloys are improved bythermomechanical treatment, and Ω phase also contributes to increase mechanical properties. Therefore,
in this study, Al-Cu-Mg alloy which has Cu/Mg=3, was subjected to four types of cold rolling of 0%,10%, 30% and 60% before artificial aging to understand how the Cu/Mg ratio to the precipitation of theΩ phase. To investigate mechanical property Vickers microhardness measurement was conducted andTEM observation were performed to observe microstructure. It was confirmed that the maximum
hardness was increased with increase of rolling reduction ratio and concentration of Cu and Mg. WithTEM observations, the number density of precipitates increased with increasing Cu and Mg.
concentration and rolling reduction ratio.
Keyword: Al-Cu-Mg, Precipitate, TEM, Ω phase, Cold-rolling
Email: †ikenolab@sus.u-toyama.ac.jp

17O11-Microstructural observation of Al-based TiAl
composites fabricated by 3DPC
H. Tsukuda1, T. Tsuchiya2, S. Lee2, S. Ikeno3, and K. Matsuda2, †, M. H. Park4, M. Murayama5
1Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, 930-8555, Japan
2 Faculty of Sustainable Design, Department of Materials Design and Engineering, University of Toyama , Toyama,

Toyama, 930-8555, Japan
3Professor emeritus, University of Toyama, Toyama, Japan
4Graduate School of Engineering, Kyoto University,Kyoto , Kyoto, 606-8501, Japan
5Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka, 816-8580, Japan

The intermetallic compound TiAl is used in the automotive and aerospace industries for turbochargers
and jet engines because of its low specific gravity and high-temperature strength . In addition, the regularlattice does not collapse until near the melting point, and since it contains about 30% covalent bonds, thedeformation stress shows inverse temperature dependence in the high-temperature region, and it has
excellent oxidation resistance and corrosion resistance. Because of these characteristics, TiAl is being
put to practical use in various fields. However, TiAl-based intermetallic compounds have some problems,such as poor workability and difficulty in forming without special methods3). 3) In order to solve thisproblem, we can expect to create a composite material with good workability that has the excellent
properties of TiAl by using aluminum, a metallic material with excellent workability and corrosion
resistance, as the matrix phase and combining it with particles of intermetallic compound TiAl to create
a composite material with good workability.
In TiAl/Al-based composites, there is concern about the formation of coarsened intermetallic compound
Al₃Ti when casting is performed; from the equilibrium state diagram of the Al-Ti binary system. We
thought that the formation of Al₃Ti could be prevented by casting at a lower molten metal temperature.
In this study, we investigated the microstructure and composite properties of the fabricated composites
by casting with Al-10%Si alloy, which has a lower melting point than Al, and TiAl particles made ofhigh-purity chemistry.
Keywords: TiAl, Al₃Ti, Composite materials
Email: †ikenolab@sus.u-toyama.ac.jp

18O12-Tuning spin reorientation transition and spin switchingin praseodymium-erbium orthoferrites single crystals
X. X. Ma1, N. Yuan2, W. T. Yang1, S. Zhu1, C. F. Shi1, H. Song1, Z. Q. Sun1, B. J. Kang1, W. Ren1,
3, S. X. Cao1, 3‡
1Department of Physics, Materials Genome Institute and International Center for Quantum and Molecular

Structures, Shanghai University, Shanghai 200444, China
2Kirchhoff Institute of Physics, Heidelberg University, INF 227, D-69120 Heidelberg, Germany
3Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China

We prepared a series of high-quality single crystal samples of PrxEr1-xFeO3 (x=0, 0.1, 0.3, 0.5) using
the optical floating zone method. The crystal structure, quality, and single crystal axis orientation were
determined by room temperature powder X-ray diffraction, back-reflection Laue X-ray diffraction, andRaman scattering at room temperature. Magnetic measurements indicate that the spin reorientationtransition type and the temperature region of spin reorientation transition can be tuned by introducing
different ratios of Pr3+. The trigger temperature of spin switching and magnetization compensation
temperature of PrxEr1-xFeO3 crystals can be adjusted by doping with different proportions of Pr3+.
Furthermore, the trigger temperature of two types of spin switching of Pr0.3Er0.7FeO3 along a-axis also
can be regulated by adjusting the external field. Meanwhile, the magnetic field-triggered spin switchingeffect can also be observed along the a-axis and c-axis of Pr0.3Er0.7FeO3. An in-depth understandingof the magnetic coupling and competition between the two magnetic sublattices, rare-earth ions sublattice
and iron ions sublattice, within the RFeO3 system has important implications for advancing the practicalapplications of the relevant spin switching materials.
Keywords: Rare-earth orthoferrite, Spin reorientation transition, Spin switching
Email: ‡sxcao@shu.edu.cn (S.C.)

19

O13-Geopolymer/Zeolite P Composites from Combustion
By-products
A. Chuwongwittaya1, A. Siyasukh1 and K. Pimraksa1, 2, ‡1Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, 50200, Thailand
2Center of Excellence in Materials Science and Technology, Faculty of Science, Chiang Mai University, 50200,

ThailandThis research paper investigated the synthesis of geopolymer/zeolite composites from lignite fly ash andbiomass ash using combined reactions of geopolymerization and zeolitization under hydrothermal
treatment. The initial molar ratios of SiO2/Al2O3 were designed in the range of 3.0-6.0 using differenthydrothermal alkalinities, hydrothermal temperature and time, and specimen preparation in hydrothermal
system. At low SiO2/Al2O3 molar ratio (3.0-5.0), sodalite zeolite could be obtained incorporating withgeopolymeric phase. Tobermorite binder was also formed in this range. Zeolite P was found at higher
SiO2/Al2O3 molar ratio (4.0-5.0). The formation of zeolitic materials in geopolymeric matrix affected amechanical strength of the hardened composite materials. At SiO2/Al2O3 molar ratio of 5.0 beforehydrothermal treatment, geopolymeric gel was mainly formed reaching the highest compressive strengthand density about 43.5 MPa and 1.91 g/cm3 respectively. The strength degraded over 50% to be 19.0
MPa after hydrothermal treatment that related to the density of 1.73 g/cm3 owning to the formation ofgeopolymeric/zeolite composite.
Keywords: Geopolymer, Zeolite, Hydrothermal method, Waste circulation
Email: ‡kedsarin.p@cmu.ac.th20

O14-Orbital two-channel Kondo effect in antiferromagnetic
Weyl semimetal Mn3Ge
X. Y. Yao, G. X. Cao*

Materials Genome Institute, Shanghai University, Shanghai, 200444, China
Topological state becomes an important part of condense matter systems, but previous focus has been on
weak electron correlation systems. Weyl semimetals in strong correlation system is a fascinating platform
to research interaction between interesting topological state and the complicate Kondo effect. Here we
report the orbital two-channel Kondo (2CK) effect in antiferromagnetic Weyl semimetal Mn3Ge single
crystals, where three regimes of temperature dependence with a hallmark –T1/2 dependent non-Fermi
liquid behavior and H independence in longitudinal resistivity were experimental observed. Weakferromagnetism (MS=18 mμB/f. u.) does not break the symmetry of channel. Moreover, we discover acrossover between non-Fermi liquid and Landau-Fermi liquid behaviors at low temperature energy scale.
This finding manifests the two-level systems driven 2CK physics. Our results prove the presence oforbital two-channel Kondo physics in magnetic Weyl semimetals with certain spin polarization.
Keywords: Weyl semimetals, Orbital two-channel Kondo effect, Strong correlation
Email: guixincao@shu.edu.cn

21

O15-Effect of Sn on Segregation Behavior of Si during
Solidification of Molten SteelN. Jinno1, K. Kato2, and H. Ono2‡
1Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan
2Academic Assembly, Faculty of Sustainable Design, University of Toyama, Toyama 930-8555, Japan

Steel scraps recovered from the society contain tramp elements, which are difficult to remove once theydissolve in molten iron. Sn, used as a solder for electronic devices and tin plates, is one of the significant
tramp elements. Because Sn is difficult to remove in the refining process, Sn remains to exist in molten
steel and affects the behavior of the other elements during the solidification process due to thethermodynamic interaction between Sn and other elements. Consequently, in order to produce highquality steel, it is necessary to understand and control the effect of Sn on the other elements. On the other
hand, the Si content of high tensile strength steels, such as transformation-induced plasticity steel (TRIP
steel), is precisely controlled to achieve high strength and high elongation. However, Si and Sn areconcentrated in the liquid phase during solidification. Therefore, segregation behavior of Si can bechanged due to the thermodynamic interaction between Si and Sn. Therefore, this study aims tounderstand the effect of Sn on the segregation behavior of Si in the solidification process of Fe-3%Si0.5%C-0.4%Mn alloy. The unidirectional solidification experiment of the Fe-3%Si-0.5%C-0.4%Mn(0.5%Sn) alloy was conducted using a horizontal electric resistance furnace with a temperature gradient.
The sample was heated to 1873 K and held for 2 h. Subsequently, the sample was cooled at a constantcooling rate under the temperature gradient. The sample was cut in a parallel direction to the solidification
direction. The sample cross-section was polished and etched in nitric acid or nital. The macro- and microstructures of the cross-section were observed by optical microscopy and scanning electron microscopy(SEM). Si and Sn content distribution was analyzed by an energy dispersive X-ray spectroscopy (EDS).
The results showed that Si and Sn are concentrated together at the end of the solidification.
Keywords: Solidification, Steel, Tramp elements
Email: ‡ono@sus.u-toyama.ac.jp22O16- The spin-switching and magnetocaloric research in Tb
doped YbFeO3 single crystal
W. T. Yang1, S. Zhu1, X. X. Ma1, B. J. Kang1, J. K. Bao1, S. X. Cao1,3*‡
1 Department of Physics, Materials Genome Institute and International Center for Quantum and Molecular

Structures, Shanghai University, Shanghai, 200444, China
3 Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai, 200444, China

Rare earth orthoferrites RFeO3 (where R = rare earth element) often have excellent magnetic,
magnetocaloric, and magneto-optical properties. The properties of distinct rare earth elements are
frequently varied. YbFeO3 single crystal exhibits spin-switching (SSW) effect and spin reorientationtransition (SRT) at low temperatures, but its mediocre magnetocaloric properties limits further
applications. Therefore, we doped YbFeO3 with a high concentration of Tb ions at the R site (Yb:Tb =
1:3). The TbFeO3 single crystal shows a giant magnetocaloric effect, but the SSW effect has yet to bereported. By measuring the M-T, M-H curves of Yb0.25Tb0.75FeO3 single crystal, it is found that the SSW
effect is regulated in the FCC mode, and the temperature where the SSW occurs is increased by morethan 100 K compared with the YbFeO3. A multi-SSW effect appears in the FCW mode due to the complex
competing effect of Yb, Tb and Fe sublattices. The fitting yields a strong linear relationship between thecritical magnetization, temperature, and magnetic field for steady and metastable states. Arrott Plots arecalculated from the isothermal magnetization curve. SRT is a second-order phase transition and themagnetic order of Tb ions is turned into a first-order phase transition. The −∆Sm -T and RC-T diagram
are also calculated, indicating the −∆Sm is effectively increased by doping of Tb ions. So that it has
great magnetic refrigeration performance. As a result, it can be employed in both magnetic sensing
devices and magnetic refrigeration devices.
Keywords: Rare earth orthoferrites, Spin-switching, Magnetocaloric effect
Email: ‡sxcao@shu.edu.cn

23

O17-Spin and charge density waves in the quasi-onedimensional KMn6Bi5
J. K. Bao1,2,3, H. B. Cao4, M. J. Krogstad1,5, K. M. Taddei4, C.F. Shi2, S. X. Cao2,3, S. H. Lapidus5, S.
V. Smaalen6, D. Y. Chung1, M. G. Kanatzidis1,7, S. Rosenkranz1, O. Chmaissem1,8
1Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
2Department of Physics, Materials Genome Institute and International Center for Quantum and Molecular

Structures, Shanghai University, Shanghai 200444, China
3Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China
4Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
5Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
6Laboratory of Crystallography, University of Bayreuth, Bayreuth 95447, Germany
7Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
8Department of Physics, Northern Illinois University, DeKalb, Illinois 60115, USA

Using neutron diffraction, we elucidate the exact nature of the previously unknown AFM ground stateof KMn6Bi5 and report finding transverse incommensurate spin density waves (SDWs) for the Mn atoms
with a propagating direction along the chains. The SDWs have distinct refined amplitudes of ~2.46 mB
for the Mn atoms in the pentagons and ~0.29 mB with a large standard deviation for Mn atoms at thecenter between the pentagons. The SDWs exhibit both local and itinerant characteristics potentially due
to cooperative interactions between local magnetic exchange and conduction electrons. Single crystal xray diffraction below the AFM transition revealed satellite peaks originating from charge density waves(CDW) along the chain direction with a q-vector twice as large as that of the SDW, pointing to a strong
real space coupling between them. Our work not only reveals a fascinating intertwined spin, charge, andlattice, orders in one-dimensional KMn6Bi5, but also provides an essential piece of information on its
magnetic structure to understand the mechanism of superconductivity in this new Mn-based family.
Keywords: Spin/Charge density wave, Quasi-one-dimensional, Mn-based superconductor
Email: chmaissem@anl.gov

24

O18-Effect of Nb content on the microstructure andcorrosion resistance of FeCoCrNiNbx high entropy alloy inchloride ion environment
C. Liu1, Y. Gao1, K. Chong1, F.Q. Guo1, D. T. Wu2, Y. Zou3
1School of Materials Science and Engineering, Shandong University, Jinan 250061, China
2Key

Laboratory of Liquid-Solid Structural Evolution and Processing of Materials, Ministry of

Education,
Shandong University, Jinan, 250061, China
3Shandong Engineering & Technology Research Center for Modern Welding, Shandong University,

Jinan, 250061, China
In this paper, FeCoCrNiNbx high entropy alloy was prepared by vacuum arc melting, and the effect of
Nb content on its microstructure and corrosion resistance in a chloride ion environment was investigated.
Based on the calculated pseudo-binary phase diagram analysis and experimental results show that the
microstructure of the FeCoCrNi alloy is a single FCC solid solution and that the Laves phase in the
FeCoCrNiNb x alloy increases with the addition of Nb elements, the microstructure of the
FeCoCrNiNb0.15 alloy is dissociated eutectic, the microstructure of the FeCoCrNiNb0.33 alloy is typicallysub-eutectic and the microstructure of the FeCoCrNiNb0.5 alloy is typically eutectic. The FeCoCrNiNbx(x=0,0.15,0.33,0.5) alloy has a higher corrosion resistance than the conventional corrosion-resistant
316L stainless steel and the FeCoCrNiNb0.15 alloy shows the best excellent corrosion resistance. The
FeCoCrNiNb x (x=0.33,0.5) alloy suffers from more severe galvanic corrosion due to the formation of
more Laves phases, while the FeCoCrNi alloy and the FeCoCrNiNb0.15 alloy benefit from the protectionof a dense and stable passivation film with only minor pitting corrosion. The XPS analysis and MottSchottky test of the passivation films showed that the solid solution of a small amount of Nb promoted
the more formation of dense Cr2O3 in the passivation film of FeCoCrNiNb0.15 alloy, and the formed
passivation film had the characteristics of P-N junction, and compared with the passivation film of
FeCoCrNi alloy with mainly n-type semiconductor characteristics, the corrosion resistance of the
FeCoCrNiNb0.15 is superior.
Keywords: FeCoCrNiNbx high-entropy alloy, Microstructure, Passivation film, Mott-Schottky curve, Corrosion
resistanceE-mail: yzou@sdu.edu.cn

25

O19-Thermal stability and corrosion behavior of a novel
Zr22.5Ti22.5Hf22.5Ni22.5Ta10 high-entropy amorphous alloy
K. Chong1, Y. Gao1, Z. B. Zhang1,2, Y. Zou1‡, X. B. Liang1,2‡
1Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Schoolof Materials and Engineering, Shandong University, Jinan 250061
2Defense Innovation Institute, Academy of Military Sciences, Beijing, 100071

High-entropy amorphous alloys have aroused the interest of researchers due to their unique and excellent
properties caused by composition and structure. The present study reasonably designed and prepared anovel Zr22.5Ti22.5Hf22.5Ni22.5Ta10 high-entropy amorphous alloy with excellent thermal stability andcorrosion resistance. The microstructure of as-spun ribbon was disorder amorphous structure confirmed
by XRD and TEM. The DSC test measured that the glass transition temperature (Tg) and crystallization
onset temperature (Tx) were 745 K and 812 K, respectively. This high-entropy amorphous alloy showeda wider crystallization range than conventional amorphous, benefiting from the high mixing entropy
effect. In addition, the corrosion resistance and passivation behavior of Zr22.5Ti22.5Hf22.5Ni22.5Ta10 highentropy amorphous alloy were carefully investigated. The electrochemical tests confirm better corrosion
resistance of Zr22.5Ti22.5Hf22.5Ni22.5Ta10 high-entropy amorphous alloy than 316L stainless steel. The
excellent corrosion resistance of high-entropy amorphous alloy is attributed to the complex compositionand dense structure of the passivation film. The ribbon presents the best corrosion resistance after
potentiostatic polarization with the potential of 0 VSCE, and XPS results show the passivation film ismainly composed of the oxides of Zr, Ti, Hf, Ta. Kinetic factors may have contributed to the fact thatthe measured content of these oxides differed from the thermodynamic tendency to generate them. The
semiconducting bipolarity of passivation film is also beneficial to improving corrosion resistance.
Keywords: high-entropy metallic glass, Thermal stability, Corrosion resistance, Passivation film
Email: ‡yzou@sdu.edu.cn

26

O20-The microstructure and magnetic properties of Fe ion
doped GdCrO3
C. F. Shi1,2, Y. L. Su2,3, G. S. Gong2,3, J. K. Bao1,4*, S. X. Cao1,4†
1Departmentof Physics, Materials Genome Institute and International Center for Quantum and Molecular

Structures, Shanghai University, Shanghai 200444, People’s Republic of China
2Schoolof Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002,

People’s Republic of China
3Henan Key Laboratory of Magnetoelectronic Information Functional Materials, Zhengzhou University of Light

Industry, Zhengzhou 450002, People’s Republic of China
4Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People’s

Republic of China

The evolution of microstructure and magnetic properties of GdCrO3 systems were investigated with thesubstitution of Fe in Cr site via solid state reaction method. X-ray diffraction and Fourier transform
infrared spectra characterization analyses show that the GdCr1-xFexO3 (0≤ x ≤0.5) polycrystalline samples
were successfully prepared, the lattice constants and CrO6 octahedral deformation increase with the Fe
doped concentration. Positron annihilation spectra indicate a decrease in defect volume and anenhancement of defect concentration with the introduction of Fe. Simultaneously, the field-cooled (FCC)and zero-field cooled (ZFC) curves of GdCr1-xFexO3 (0≤ x ≤0.5) samples exhibit that the magnetization
reversal of GdCrO3 can be inhibited after the Fe introduced into the lattice, and FCC curves show spin
flip characteristics due to the anomalous lattice distortion at x = 0.3 and x = 0.4 sample. Additionally, theantiferromagnetic temperature (TN) varies with strength of symmetric (Je).
Keywords: Microstructure, Spin flip, Vacancy defect
Email: *jinke_bao@shu.edu.cn, †sxcao@shu.edu.cn

27

O21-Surface modification of aluminum alloy by local laser
irradiation
A. Saiki1*, M. Yamamoto1, T. Hashizume1
1Department of Materials Design and Engineering, School of Sustainable Design, University of

Toyama, Toyama, Japan
Aluminum is lightweight, has high specific strength, and is highly decorative, so demand for aluminum
will continue to increase in the transportation, construction, and home appliance industries. Whilesmelting from ore requires a large amount of energy, recycling requires a smaller amount of energy, andthe percentage of recycled materials will increase in the future from the viewpoint of energy consumption,
including CO2 emission limits. In recycled aluminum alloy materials with a relatively high proportionof unintended constituents, surface properties and their modification as well as strength will become
important in the future.
In this study, we attempted to modify the strength and surface properties of the material by utilizing theability of laser irradiation to selectively heat only a few microns in size to modify the local area near thesurface. By applying the laser heat treatment to the material surface in an arbitrary irradiation pattern, it
was possible to create a microstructure with different thermal histories at different locations. As a result,the laser-patterned aluminum alloy materials showed anisotropic mechanical properties, and at the sametime, the surface condition of the material was affected.
Keywords: Laser irradiation, Aluminum alloy, Anisotropy, Hardness
Email：saiki@sus.u-toyama.ac.jp28O22-Flux pinning behavior and related physical mechanismof CaKFe4As4 superconductor
T. He1,2, C. L. Wang2, J. Y. Ge1
1Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China
2Key

Laboratory of Microelectronics and Energy of Henan Province, Henan Joint international ResearchLaboratory of New Energy Storage Technology, School of Physics and Electronic Engineering, Xinyang Normal
University, Xinyang 464000, People’s Republic of China

We have synthesized iron-based superconductor CaKFe4As4 single crystals by a simple one-step method,the onset transition temperature is about 35 K with the ΔTc ∼1 K. By measuring the magnetoresistanceand dynamical magnetization relaxation, the vortex transitions of the CaKFe4As4 single crystals havebeen investigated, a small region of vortex liquid region is observed indicating strong flux pinning ability.
The Jc can be respectively enlarged more than 3 and 50 times in H parallel to c-axis and ab-plane attemperature of 5 K and high magnetic fields of 8 T when the d is reduced from 88 to 2.0 µm.
Accompanied by the enhanced Jc, the fishtail effect fades away with the decreasing d, both the origins ofenhanced Jc and the fishtail effect in CaKFe4As4 may have close relationship with the interlayer coupling
between CaKFe4As4 and the intercalations of KFe2As2. Based on the dynamic relaxation rate Q andtransient current Js by means of generalized inversion scheme, the pinning mechanisms of CaKFe4As4
with different defect types have been studied, it seems that non-superconducting second phase with thesize close to ξ are necessary to obtain strong δTc-pinning in CaKFe4As4. The present work illustrates
how the defect structure affects the flux pinning behaviors and can provide a new clue to design highperformance superconducting wire/tapes and films for strong magnetic field applications.
Keywords: Iron-based superconductor, Flux pinning, Defect structure
Email: hetian0928@shu.edu.cn

29

O23-Effect of thermal aging on the properties andmicrostructure of Al-Cu-Mg-Si alloy
V. N. Hai, H. Saito1, T. Tsuchiya2, S. Lee2, S. Ikeno3, T. Katsumi4, K. Kita4, K. Matsuda2, †1Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, 930-8555, Japan
2 Faculty of Sustainable Design, Department of Materials Design and Engineering, University of Toyama , Toyama,

Toyama, 930-8555, Japan
3Professor emeritus, University of Toyama, Toyama, Japan
4YKK CORPORATION, Kurobe, Toyama 938-8601, JapanThe 2XXX series alloys are heat treatable aluminum alloys based on the Al-Cu-Mg-(Si) system. They
are used in high-performance structural aerospace and transportation application. In this study, the effects
of solution and aging treatments on the microstructure and mechanical properties of Al-1.0Cu-0.96Mg0.36Si alloy were investigated. The sample was then cut into smaller pieces, heat treated, grinded andpolished before performing hardness test and observing the precipitation distribution in microstructure.
The objective of present work is to establish the hardness and ageing time curve, microstructure
examination for different heat treatment conditions was observed and optimization of the heat treatment
was done with a more detailed understanding of the precipitation process .The results show that it ispossible to reach a high level of hardness within a short period of time as compared to diverse conditions.
The 2-step aging process is also analyzed to compare peak age period and hardness level of the material,
2-step aging are then compared with the three different cold-rolling in reduction to conclude which has
the most suitable peak hardness for commercial use. The enhancement of properties after aging is
attributed to the precipitation of β , 𝑆 and 𝜃

phase from the α-Al matrix. When an aluminum alloyis used, forming is one of the indispensables processes, and dislocation and grain refinement occurring
during processing have a great influence on the formation of precipitation. In this study, the effect of preaging temperature and cold colling processing on the 2-step aging of the Al-1.0Cu-0.96Mg-0.36Si alloy
will be investigated using transmission electron microscopy(TEM) to investigate the effect ofprecipitation process and precipitation on strength improvement.
Keywords: 2-step aging process, Precipitation, TEM
Email: †ikenolab@sus.u-toyama.ac.jp30O24-Electric transport properties of ZrB12 micro-bridge
A. L. Zhang1, L. X. Gao1, J. Y. He1, V. B. Filipov2, Q. L. Xiao1, J. Y. Ge1, 3, 4, ‡1Materials Genome Institute, Shanghai University, 200444 Shanghai, China
2Frantsevich Institute for Problems of Materials Science, NASU, 03680 Kiev, Ukraine
3Department of Physics, Shanghai Key Laboratory for High Temperature

Superconductors, Shanghai University, 200444 Shanghai, China
4Zhejiang Laboratory, Hangzhou, 311100, China

ZrB12 single crystal has controversies in its band and superconductor type [1-3]. New experiments havealready show evidence of type 1.5 and two-band superconductor [4-5]. Theoretical analysis suggests that
decreasing thickness could cause a transition of superconductor type to a type II superconductor from atype 1.5 or type I superconductor, which may mean that the weak influence of two band structure. In our
experiments, the ZrB12 micro-bridge with 1μm thickness was prepared by focused ion beam. Then theresistivity and I-V measurements were carried out using the standard four-dc-probe technique. R-T curvesof higher magnetic fields show “knees” at lower temperatures, which is the classical character of 2
dimension (2D) superconducting phase and also show a quantum phase transition to an intermediate 2D
metallic state, Bose metal, with a resistance much lower than RN. The activated energy deduced from RT curves presents two separated stages. The I-V measurement shows the existence of the BerezinskiiKosterlitz-Thouless (BKT) transition, which represents the motion of the free vortices. However it does
not show hysteresis in the I-V curves, which is also the critical symbol of 2D superconducting phase.
Instead it shows a slight step in the I-V curves especially at low temperature and low magnetic field. So
the ZrB12 micro-bridge may have a quasi-2D superconducting state and is possibly influenced by the twoband structure with two different coherence length (ξ). From the I-V curves, critical current (Jc) of ZrB12
micro-bridge was extracted. The penetration depth (λ) deduced from Jc cannot be fitted by a single band.
Although type 1.5 superconductor ZrB12 presents a single λ, it can be influenced by its two band structure.
The fitting of extracted λ with two-band model suggests that below 4.9 K, both the lower band and higher
band play the role at the same time and above 4.9 K the higher band play the vital role. The results ofour experiments suggest that the two-band structure still has a vital role on the superconductivity of ZrB12
micro-bridge with a possible state of quasi-2D superconducting.
Keywords: Type 1.5 superconductor, Quasi-2D superconducting, Electric transport
Email: ‡ junyi_ge@t.shu.edu.cn

31O25-Data-driven techniques for high-hardness Al-Mg-Si
series alloy to obtain optimal chemical composition
Y. Koishikawa1, N. Nunomura2, T. Nakamura1
1Graduate School of Science and Engineering for Education, University of Toyama, Toyama, Japan
2Graduate School of Science and Engineering for Research, University of Toyama, Toyama, Japan

In conventional alloy development, many scientists have successfully made major discoveries byconducting experiments based on their own experience and intuition. However, these approaches require
enormous amounts of time and money, and depend on researcher’s experiences. At the same time as thisstudy, various researchers have proposed by machine learning to develop aluminum alloys, but no one
have been reported utilizing mathematical optimization. Therefore, we proposed the new method aboutalloy development with machine learning and mathematical optimization. To create an experimental
dataset, we collected data on alloy compositions and their hardness from papers. Multiple regression
analysis was performed to predict hardness form chemical composition, using Wrapper Method forvariable selection and Leave-One-Out cross validation for data division. To examine the prediction
accuracy of our model, we applied the coefficient of determination (R2) and root mean square error(RMSE), and then the values were 0.770 and 12.51 [HV], respectively. Furthermore, by combining
machine learning results with mathematical optimization, the optimal alloy composition can be obtained.
Result of mathematical optimization will be reported in detail on the day.

Keywords: Data-driven, mathematical optimization, Al-Mg-Si series alloy
Email: ‡m2171513@ems.u-toyama.ac.jp32

O26-Phase diagram for FeySexTe1-x superconductors
J. Y. Zhang, J. Y. Ge‡
Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China

Because of its simple crystal structure and abundant phase diagrams, Fe(Se, Te) is considered as an ideal
candidate to study the superconducting mechanism of iron-based superconductors, and even hightemperature superconductors. The superconductivity of Fe(Se, Te) is sensitive to its compositionalvariation, not just the Se content, but also the Fe content. Several Se content-dependent electronic andmagnetic phase diagrams for Fe(Se, Te) superconductors have been established, but the Fe contentdependent phase diagram is still absent. Here, a series of FeySe0.4Te0.6 bulks has been fabricated by thesolid state reaction method and corresponding thin films have also been prepared by the pulsed laser
deposition method. The effect of Fe content, in the range of 0.6 to 2.0, on the structure andsuperconductivity of FeySe0.4Te0.6 superconductors has been systematically investigated, and a more
complete phase diagram for FeySexTe1-x superconductors with wider range of Fe content was developed.
When Fe content is taken into account, the Se content x corresponding to FeySexTe1-x film with the highest
superconducting transition temperature (Tc) shifts to a lower value, instead of 0.8. Our results provide amore accurate phase diagram for the Fe(Se, Te) superconductors, which facilitates the rational regulationof the superconducting properties, as well as the study of the underlying superconducting mechanism.
Keywords: FeySexTe1-x superconductors, Fe content, Phase diagram
Email: ‡junyi_ge@t.shu.edu.cn

33

O27-Thermophysical and mechanical properties of Al2O3doped YTaO4 ceramic as potential thermal barrier coating
T. Xue1, Y. Zou2
1School of Materials Science and Engineering, Shandong University, Jinan, Shandong, 250061, China
2Shandong Engineering & Technology Research Center for Modern Welding, Shandong University，Jinan,

Shandong, 250061, China

In this paper, a series of solid solutions ceramics of (AlxY1-x)TaO4 (x = 0, 0.02, 0.04, 0.06, 0.08, 0.1)
were synthesized via hot pressing solid-state reaction, after which an analysis of the phase composition
and microstructures of the samples is conducted using X-ray diffraction (XRD), Raman spectroscopy
and scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) employed tocharacterize the variation of bond energy with composition reveals that Al3+ ions substitute Y3+ ions inthe structure of YTaO4 ceramics. The thermal expansion coefficients (TECs) of (AlxY1-x)TaO4 ceramics
vary in some ranges (10–11.5 × 10−6 K−1, at 1200 °C), but are comparable to that of YSZ. In addition,
this research systematically investigates the discipline of hardness and modulus changing with thecomposition. Given the excellent thermophysical properties it exhibits, (AlxY1-x)TaO4 ceramic material
is believed to be a prospective TBCs material.
Keywords: Ceramics, TBCs, Rare earth tantalates, Thermal properties, Mechanical property
Email: yzou@sdu.edu.cn

34O28-Interfacial and opto-electronic properties of halide
perovskites: from toxic to eco-friendly
S. H. Wang
Materials Genome Institute, Shanghai University, Shanghai 200444, China

Recent years, the organic-inorganic hybrid perovskite solar cells (PSCs) have attracted extensive
attention due to their intriguing optoelectronic properties. The power conversion efficiency (PCE) has
increased from 3.8% to 25.7%, which reveals very promising potential for commercial applications. In
this presentation, I will present the interfacial and opto-electronic properties of all-inorganic cesium lead
halide perovskite (CsPbI3), as well as the method for preparing high-performance device. The growth
dynamics of CsPbI3 perovskite and a detailed study on hole transport material for CsPbI3 to enhance thestability and the opto-electric conversion efficiency will also be discussed. Lead-based perovskites
deliver excellent device performances, but Pb is a toxic element. To avoid the health crisis to humanbeings and the pollution to our environment, it is essential to develop non-toxic perovskites. Alternatively,
Sn-based perovskites show the merit of eco-friendliness. The growth of CsSnI3 and the challenges will
be discussed.
Email: shenghaowang@shu.edu.cn

35

O29-Field-driven surface state and topological nodal lines inlayered semimetals
G. X. Cao *Materials Genome Institute, Shanghai University, Shanghai, 200444, China

The metallic surface state of topological insulators (TI) are protected by the time reversal symmetry(TRS). The Hallmark of the universal metallic surface state in the transport is a clear resistivity plateau
at low temperatures in ideal TI or in several three-dimensional (3D) and two dimensional (2D)
topological semimetals when breaking TRS. However, the observation of topological surface in the lowdimensional are scare. We report experimental evidence of topological surface state in the quai-onedimensional (Q1D) and 2D van der Waals semimetals. Magnetotransport measurements display the
emergency of a field induced low-temperature (low-T) topological insulator (TL) with a plateau.
Combined angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT)
calculations reveals multiple Dirac nodal lines, with a small gap opening in the spin-orbit coupling.
Keywords: Topological semimetals, Nodal lines, Van der Waals.
Email: guixincao@shu.edu.cn

36O30-Improvement on electrochemical activity of anodematerials for magnesium rechargeable batteries by laser
processing
T. Tsukeda1, K. Kikura2, T. Aida1, H. Tabat3, H. Kurihara4, and M. Suzuki5
1University of Toyama, Faculty of Sustainable Design, Toyama, 930-8555, Japan
2University of Toyama, Graduate School of Science and Engineering, Toyama, 930-8555, Japan
3Chuetsu Metal Works Co., Ltd., Advanced Technology Laboratory, Toyama, 930-0298, Japan
4Saitama Industrial Technology Center (SAITEC), Saitama, 333-0844, Japan
5Toyama Prefectural University, Faculty of Engineering, Toyama, 939-0398, JapanThe social implementation of innovative rechargeable batteries is urgently needed in various fields. In
particular, magnesium is attracting attention from the viewpoint of cost, safety, and electric capacity,which are the issues of conventional lithium-ion batteries. The authors have focused on the single roll
rapid solidification method to reduce production costs, and have found that the electrochemical activityof Mg-3mass%Al-1mass%Zn (AZ31) alloy and Mg-5.3mass%Al-3mass%Ca (AX53) alloy in ribbons
on the order of 0.1mm in thickness surpassed that of conventional AZ31 rolled materials used for Mg
rechargeable batteries. To further improve the properties, the electrochemical activity of Mg-Al-Ca alloy
ribbons and AZ31 rolled material was investigated by drilling with an ultrashort laser pulse to enhance
the charge-discharge reaction by increasing the surface area.
For the Mg-Al-Ca alloys used as specimens, Ca was kept constant at 3% and Al was varied from 0 to
14%. The melting points of the alloys were calculated using Thermo-Calc. The single roll type liquid
quenching and solidification apparatus uses oxygen-free copper cooling rolls, and the material in a
crucible with a nozzle made of SUS430 is heated and melted by a high-frequency coil and injected with
Ar gas onto a high-speed rotating roll to produce a ribbon. The redox behavior of magnesium alloys aselectrochemical activity was evaluated by constant-current charge-discharge tests using a three-pole
Beaker cell. The working electrode was a ribbon sample, the counter electrode was an activated carbon
electrode, the reference electrode was a high-purity magnesium foil, and the electrolyte was a cyclic acidanhydride, succinic anhydride: SA and MgTFSA2 dissolved in DMA. A high-power femtosecond
oscillation laser was used to process the free-solidification surface of the composition thin zone, which
had the best electrochemical activity. The processing conditions for the holes were the most filled array,a hole diameter of 0.06 mm, and a hole center-to-center distance of 0.08 mm. Addition of 3%Ca alone
to pure Mg caused a rapid increase in polarization resistance, but combined addition with Al reduced theovervoltage, and combined addition of 9%Al (AX93) showed excellent electrochemical activity.
However, a higher excess of Al had the opposite effect. Therefore, laser processing was performed on
an AX93 ribbon and an AZ31 rolled plate as a comparison material.
First, the patterns were found to have a larger surface area in the tightly packed configuration than in thesimple cubic configuration. Furthermore, the combination of hole diameter and center-to-center distance37

can be expected to increase the surface area by a factor of up to 4, but this time a prototype was madewith a diameter of 60 μm and center-to-center distance of 80 μm (aiming for a 2.6-fold increase in surfacearea). Both the AX93rribbon and AZ31 rolled material samples showed an increase in activity of about
200 mV.
Keywords: magnesium rechargeable batteries, Single roll rapid solidification method, Laser processing,
Mg-Al-Ca alloy ribbons
Email: tsukeda@sus.u-toyama.ac.jp38O31-Electronic structure of FeS superconductor
J. Miao1, X. H. Niu1, D. F. Xu1, Q. Yao1, Q. Y. Chen1, T. P. Ying, 1 S. Y. Li1,2, Y. F. Fang3, J. C. Zhang3,
S. Ideta4, K. Tanaka5, B. P. Xie1,2,, D. L. Feng1,2,†, and F. Chen3,‡
1State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan

University, Shanghai 200433, People’s Republic of China
2Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, China
3Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China
4UVSOR Synchrotron Facility, Institute for Molecular Science, National Institutes of Natural Science, Myodaiji,

Okazaki 444-8585, Japan
5UVSOR Synchrotron Facility, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan

Here we report the electronic structure of FeS, a recently identified iron-based superconductor. Our highresolution angle-resolved photoemission spectroscopy studies show two holelike (α and β) and twoelectronlike (η and δ) Fermi pockets around the Brillouin zone center and corner, respectively, all ofwhich exhibit moderate dispersion along kz. However, a third holelike band (γ ) is not observed, whichis expected around the zone center from band calculations and is common in iron-based superconductors.
Since this band has the highest renormalization factor and is known to be the most vulnerable to defects,
its absence in our data is likely due to defect scattering—and yet superconductivity can exist withoutcoherent quasiparticles in the γ band. This may help resolve the current controversy on the
superconducting gap structure of FeS. Moreover, by comparing the β bandwidths of various ironchalcogenides, including FeS, FeSe1−xSx, FeSe, and FeSe1−xTex, we find that the β bandwidth of FeS isthe broadest. However, the band renormalization factor of FeS is still quite large, when compared withthe band calculations, which indicates sizable electron correlations. This explains why theunconventional superconductivity can persist over such a broad range of isovalent substitution in
FeSe1−xTex and FeSe1−xSx.
Keywords: Electronic structure, Iron-based superconductor, ARPES
Email: ‡chf001@t.shu.edu.cn

39O32-Improving CMAS-corrosion resistance of YSZ-based
thermal barrier coatings with Al2O3 addition
J. S. Han1, Y. Zou1, D. T. Wu1, J. Chen1, Y. G. Zhang1,2
1Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of

Education, Shandong University, Jinan 250061, PR China
2Shenzhen Research Institute of Shandong University, Shenzhen 518063, PR China

Thermal barrier coatings (TBCs), exposed to the molten calcium‑magnesium‑aluminum-silicate (CMAS)
deposits, could become degraded more readily during service. In this paper, the composite Al2O3/YSZ
TBCs with different Al2O3 additions were prepared through the atmospheric plasma spraying techniqueand their resistance to CMAS corrosion at 1250 ℃ was carefully compared to the 7YSZ (7 wt.% Y2O3
stabilized ZrO2) TBCs. It was found that two distinct microstructural characteristics, i.e. thermo-chemical
reaction zone and CMAS physical-infiltration zone, were identified for both the 7YSZ coating and the
10 wt.% Al2O3-7YSZ coating. The thermo-chemical reaction zone was severely corroded by molten
CMAS, inducing the dissolution and re-precipitation of YSZ material and generating small globular mZrO2 particles. Furthermore, these two coatings were completely infiltrated (approximately 300 μ m) anddeveloped significant macroscopic bending. With the Al2O3 addition increasing above 20 wt.%, the depthof the thermo-chemical reaction zone was restricted to 35 μ m without obvious CMAS physicalinfiltration. During CMAS attacking the Al2O3/YSZ coating, continuous dissolution of Al2O3 into CMAS
melt could promote anrthite crystallization along the CMAS-coating interface, which effectively
restrained CMAS penetration and improved CMAS corrosion resistance.
Keywords: Thermal barrier coatings, Atmospheric plasma spraying, Al2O3/YSZ composite coating, CMAS
corrosion
Email: jiasenhan@sina.com

40

O33-In-situ conversion of amorphous carbon to grapheneenhances the oxidation resistance of dendritic copper
powderM. Q. Zhang1,2, G. X. Cao 1,*, J. C. Zhang1,*, Q. X. Ye 2,* , Y. L. Huang1, X. Y. Yao1, R. D. Yu2, J.
Wang2, Z. C. Xiao2, L. X. Zhou 2,*, J. M. Cai 2,*
1Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China
2Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093,

People’s Republic of China

Copper powder has excellent electrical conductivity, but is easily oxidized by air. This limits its
application in printed circuits and related fields. In this paper, graphene was grown in-situ on the surface
of dendritic copper powder in order to improve the powders’ oxidation resistance and maintain its highelectrical conductivity. Firstly, dendritic copper powder with a diameter of about 100-200 nm was
prepared by electrochemical deposition. Then, the powder was coated with an amorphous carbon film
by Plasma Enhanced Chemical Vapor Deposition (PECVD) using C2H2 at 350℃. Finally, the amorphous
carbon film was transformed into graphene at 850℃, and dendritic copper powder coated with graphene
was obtained. TG-DTA and electrical resistivity measurements showed that the oxidation resistancetemperature of dendritic copper powder can be increased from 213.7 ℃ to 283.4 ℃ and the resistivity
can be reduced from 0.00544 Ω⋅cm to 0.00308 Ω⋅cm by in-situ growth of graphene on the surface ofcopper powder. The in-situ synthesis of graphene is expected to promote the wide application of copper
powder in areas requiring high electrical conductivity and oxidation resistance.
Keywords: Dendritic copper powder, Amorphous carbon, Graphene, Anti-oxidaion
Email: j.cai@kmust.edu.cn.

41

P1-Effect of Injection Molding Conditions on Dimensional
Accuracy and Mechanical Properties of Carbon Fiber
Reinforced PEEK
K. Maida¹, T. Nakagawa², T. Tsukeda², T. Aida², Y. Funato³, and S. Kajikawa⁴
₁University of Toyama, Graduate School of Science and Engineering, Toyama, 930-8555, Japan
₂University of Toyama, Faculty of Sustainable Design, Toyama, 930-8555, Japan
₃TC Toyama Co., Ltd., Toyama, 930-0274, Japan
₄Makino Milling Machine Co., Ltd., Kanagawa, 243-0303, Japan

In recent years, machine tools have been required to achieve higher machining accuracy and productivity.
In order to satisfy those requirements, spindle speed and accuracy must be increased. As the spindle
speed increases, the rotational speed of the bearings supporting the spindle also increases. When therotational speed of the bearing increases, the friction between the balls and cage increases in steel cages,
causing seizure and cage damage. Therefore, attention has focused on resin cages, which are superior tosteel in terms of self-lubrication, low friction, and light weight. Furthermore, super engineering plastics
with a heat resistance temperature of 150℃ or higher are increasingly demand as a metal substitutematerial. The polyether ether ketone (PEEK) used in this study has a high heat resistance of 240°C, andhas superior mechanical properties compared to polyamide, which the resin materials that traditionallyhas been used as a cage material. To improve mechanical properties, 30 wt.% carbon fiber was added tothe molding process.
Injection molding is the main molding methods for resin materials. In this study, an in-line screw typeinjection molding machine was used. This system has a simpler structure than the pre-plunger system,
making it easier to maintain, and injection are performed with a single cylinder, resin retention is lesslikely to occur. Injection molding has the advantages of high productivity, no post-molding processing,and the ability to accommodate complex shapes. However, there are disadvantages such as dimensional
defects due to molding shrinkage and reduced strength due to differences in resin flow. Therefore, weinvestigated the effects of injection molding conditions on the dimensional accuracy and tensile strengthof carbon fiber reinforced PEEK in order to improve the properties of resin retainers.
The specimen is a resin material made of PEEK with 30% carbon fiber added. For molding, samples
were made using an inline injection molding machine with a mold clamping force of 200 t, a plunger
diameter of 28 mm, and a maximum injection pressure of 287 MPa. The molding conditions were set atholding pressures between 0 and 270 MPa. The molded products were evaluated for dimensional
accuracy and mechanical properties by measuring roundness using a CNC image measuring instrument
and tensile testing at room temperature. In addition, SEM observation of the fracture surface was
performed to examine the orientation of the carbon fibers on the fracture surface, the tensile strength also
increased.
Keywords: PEEK, Carbon fiber, Injection molding, Roundness, Tensile strength
Email: m10821kei@gmail.com

42

P2-Organic Lead-based Halide Perovskite Single Crystal for
High-performance Photodetector
Y. H. Chen1,2,3, Z. J. Feng1,2,3,4*, and J. C. Zhang1,2*
1Materials Genome Institute, Shanghai University, Shanghai, 200444, China
2Zhejiang Laboratory, Hangzhou 311100, China
3Shanghai Laue Sci. & Tech. Institute, Shanghai, 200444, China
4Shanghai Key Laboratory of High Temperature Superconductors, Department of Physics, Shanghai University,

Shanghai, 200444, China

There has been growing interest in organic Lead-based halide perovskites as a promising candidate for
optoelectronic applications due to their excellent optical and electrical characteristics, such as high andbalanced carrier mobility, long carrier diffusion length, and adjustable band gap. Despite this, most of
the reported perovskite photodetectors based on polycrystalline thin films suffer immensely from hightrap density and poor stability owing to grain boundaries, limiting their photoelectric performance.
Perovskite single crystal have the ability to reduce the trap density and construct high performance
photodetectors compared to their thin-film counterparts. Herein, we present a new method of usinghydrobromic acid as solvent to grow CH3NH3PbBr3 single crystal via inverse temperature crystallization.
The Au/ CH3NH3PbBr3 single crystal/Au photodetector was fabricated, which exhibits a fast rise anddecay time of 180 ms and 310 ms under the 450 nm light illumination at 3 V, respectively. We provide
an alternative approach for fabricating perovskite single crystal, which could apply to high performance
photodetector.
Keywords: CH3NH3PbBr3 single crystal, hydrobromic acid, high performance photodetector
Email: fengzhenjie@shu.edu.cn; jczhang@shu.edu.cn

43

P3-Microstructure evolution of Al-1.0Mg-0.6Si(mass%)
alloys with homogenization treatment
S. Kawamata1, T. Tsuchiya2, S.Lee2, S. Ikeno3, and K. Matsuda2, †1Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, 930-8555, Japan
2 Faculty of Sustainable Design, Department of Materials Design and Engineering, University of Toyama , Toyama,

Toyama, 930-8555, Japan
3Professor emeritus, University of Toyama, Toyama, Japan

Al-Mg-Si alloys can be increased strength remarkably with aging treatment. They are widely used as an
extrusion material for construction materials and automotive parts. Because they have good specificstrength, formability, and corrosion resistance by anodizing. In extrusion process, Al alloys are subjected
to homogenization prior to hot extrusion. The homogenization process eliminates and homogenizes
micro-segregation formed during casting. Homogenization treatment improves extrusion speed by
reducing β-AlFeSi phase and decreases surface defects like “pickups” during extrusion. The mechanismof pickups has been proposed to be influenced by the dissolution of β-AlFeSi and Mg2Si compounds. In
the microstructure after casting and homogenization, plate and rod precipitates existed in addition to theintermetallic compounds. These precipitates may be thermodynamically equivalent to the intermetallic
compounds or may dissolve at lower temperatures. Even after homogenization treatment, the coarse
precipitates were not fully solidified and remained after extrusion. The purpose of this study is toinvestigate the effect of homogenization on the microstructure after extrusion.Two kinds of alloys wereprepared; (1) non-homogenization and (2) with-homogenization treatment at 848K for 7.2ks.
Microstructure evolution was investigated each alloy using optical microscope (OM), scanning electron
microscope (SEM) and transmission electron microscope (TEM) at 120kV. In the case of nonhomogenization, intermetallic compounds were observed, and rod-shaped precipitates were observed
around intermetallic compounds. After homogenization at 848 K for 7.2 ks, the remaining intermetallic
compounds, the platelets of equilibrium β phase and the rod-shaped precipitates were observed by OM
observation. As a result of TEM observation, 2~3μm size of rod-shaped precipitates and cross-sectionsof the rod-shaped precipitates were observed for both the non-homogenization and the withhomogenization at 848 K for 7.2 ks. The SAED figures obtained from the side and cross sections of therod-shaped precipitates were analyzed as β' phase. Optical microscopy showed that after hot extrusionof non-homogenization, a contrast was observed, suggesting that intermetallic compounds had been
shattered by hot extrusion.
After hot extrusion of with-homogenization, a contrast of plate-like β-phase seen before hot extrusion
and a contrast of plate-like β-phase possibly shattered by hot extrusion were observed.
Keywords: Homogenization, Al-Mg2Si, TEM, Extrusion, Precipitate
Email: †ikenolab@sus.u-toyama.ac.jp

44

P4-Spin switch effect of TmFeO3 under low magnetic field
H. Song1, S. X. Cao1,2,‡
1Department of Physics, International Center of Quantum and Molecular Structures and Materials Genome

Institute, Shanghai University, Shanghai 200444, China
2Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China

Here we report the spin reorientation transition and spin switching of TmFeO3, which crystallize in the
distorted perovskite structure within the space group of Pbnm. Spin reorientation transition type of
TmFeO3 single crystal is Γ4 (Gx, Ay, Fz) - Γ2 (Fx, Cy, Gz), phase transition temperature range is 82-95
K. Under low magnetic field of 20 Oe, magnetization of a-axis suddenly drops at 80 K in field-cooledwarming (FCW) mode, namely, the type-Ⅱ spin switch effect occurs. In the field-cooled-cooling (FCC)
mode, magnetization suddenly jumps at 50 K, which is "reverse" type-Ⅱ spin switch effect, and has notbeen reported. This interesting phenomenon is caused by the 180° reversal of the Tm3+ magnetic moment
coupled with Fe3+ magnetic moment induced by magnetic field and Fe3+ crystal field. With the increaseof magnetic field, the spin switching effect moves towards high temperature. When the external magnetic
field increases to a certain value, the spin switching effect is completely suppressed. Meanwhile, type-Ⅱ
spin switch effect also happens along the c-axis.
Keywords: TmFeO3, Spin reorientation transition, Spin switch effect
Email: ‡sxcao@shu.edu.cn

45

P5-Hot electron extraction in SWCNT/TiO2 forphotocatalytic H2 evolution from water
M. Yamagami1, T. Tajima1, H. K. Nguyen2, K. Yashima2, T. Matsubayashi2, N. Nishiyama2, T. Hayashi2,
Z. Zhang3, J. Kano3, Y. Takaguchi2†
1 Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
2 Department of Material Design and Engineering, Faculty of Sustainable Design, University of Toyama, Toyama

930-8555, Japan
3 Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan

Single-walled carbon nanotubes (SWCNTs) have attracted attention for their application as aphotoelectric conversion material due to their outstanding solar light absorption property. Recently, we
found that water-dispersible coaxial nanowires with SWCNT/C60 heterojunctions prepared by thephysical modification of SWCNTs with fullerodendrons exhibit photocatalytic H2-production activity.
However, C60 is not capable of extracting hot electrons from SWCNTs. On the other hand, Parkinson
and co-workers fabricated SWCNT heterojunctions with atomically flat surface of TiO2 and SnO2, where
higher-energy second excitonic SWCNT transitions produce more photocurrent. Because of thecontinuum of states within the metal-oxide conduction band with a density that increases with increasingenergy above the conduction band minimum, rates of carrier injection from the second excited state (E2state) of SWCNT to TiO2 or SnO2 are competitive with fast hot-exciton relaxation processes. In thiscontext, the construction of similar photocatalytic systems is of interest in order to make photocatalytic
reactions using SWCNTs more efficient. In this paper, we synthesized SWCNT/TiO2 nanohybrids todemonstrate their photocatalytic activity for hydrogen evolution from water through the hot electron
extraction from the E2 state of SWCNT to TiO2.
Keywords: Single-walled carbon nanotubes, Photocatalyst, Hydrogen evolution
Email: pxua99lq@s.okayama-u.ac.jp

46

O6-Spin switching effect in Nd0.8Pr0.2FeO3 single crystal
Z. Q. Sun1, S. X. Cao1,2‡
1Department of Physics, Materials Genome Institute and International Center for Quantum and Molecular

Structures, Shanghai University, Shanghai 200444, China
2Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China

The single crystal of Nd0.8Pr0.2FeO3 was successfully grown by the optical floating zone method. Roomtemperature x-ray diffraction and Laue photograph declared the homogeneity and high quality of thesingle crystal. Magnetic measurements were characterized by using the 2.5 millimeters cubic sample of
Nd0.8Pr0.2FeO3 single crystal, which exhibit spin switching effects in two measurement modes of zerofield-cooling (ZFC) and field-cooling (FC) magnetization vs temperature (M-T) curves under different
magnetic fields. Spin reorientation transition occurs near 74-110 K, where the spin configuration of theiron sublattice changes from Γ4 to Γ2. The type-I spin switching effect (i.e. magnetization drop) in ZFC
mode has been reported in NdFeO3 single crystals, but it has not been observed in FC mode in the parent
materials of NdFeO3 and PrFeO3 single crystals. In other words, through the doping of Pr3+, there is a
new phenomenon in Nd0.8Pr0.2FeO3 single crystal that has not been seen before in parent materials. As
the temperature drops to 12 K, a new magnetic interaction mechanism works, which results in a further
enhancement of magnetization.
Keywords: Rare-earth orthoferrite, Spin reorientation transition, Spin switching effect
Email: sxcao@shu.edu.cn

47

P7-Evaluation of electrochemical properties of batteries
prepared by aerosol deposition method
N. Akiyama1, T. Hashizume2, A. Saiki2
1Department of Material Science and Engineering, University of Toyama, Toyama, Japan
2 School of Sustainable Design, a University of Toyama, Toyama, Japan

All-solid-state batteries have the problem of high interface resistance. In all-solid-state batteries, powdermaterials are pressed together. As a result, the low packing density of the pressed powder is the cause of
the electrical resistance. Sintering is one way to increase the packing density of the pellets. In this method,
the cathode active material and solid electrolyte react during sintering, resulting in a high resistance layer.
Therefore, it is necessary to create high-density layers without sintering. One method is the aerosol
deposition (AD) method. The AD method is a film deposition method in which particles are accelerated
by gas pressure, and the powders are impacted to the substrate at high speed to form layers. The AD
method can produce dense films at room temperature. The objective of this study is to create and reducethe interface resistance of all-solid-state batteries using the AD method.
Cathode active material, oxide solid electrolyte, and anode active material were deposited on a copper
plate in layers in sequence by the AD method. The electrochemical properties of the batteries were
evaluated. The raw material and each layer of post-deposited were identified by XRD andmicrostructures were observed by SEM.
Keywords: Solid electrolyte, Battery characteristic, Lithium ion battery, Aerosol deposition method, Solid statebattery
Email：saiki@sus.u-toyama.ac.jp48

P8-Magnetodielectric effect and magnetoelectric coupling of
Co3NiNb2O9 single crystal
S. Zhu1, C. F. Shi1, G. Zhao1, W. T. Yang1, H. Y. Chen1, X. X. Ma1, J. Zhou2, B. J. Kang1,3, J. K.
Bao1,3*, S.X. Cao1,3‡
1Department of Physics, Materials Genome Institute and International Center for Quantum and Molecular

Structures, Shanghai University, Shanghai, 200444, China
2School of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002,

China
3Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai, 200444, China

High quality Ni-doped Co4Nb2O9 single crystals of Co3NiNb2O9 have been synthesized for using opticalfloating zone technique. In this paper, the structure, magnetic properties, magnetodielectric effect andmagnetoelectric coupling of Co3NiNb2O9 single crystals are investigated. The single crystal structure
was determined by room temperature powder X-ray diffraction and Laue back-ray X-ray diffraction.
Field-dependent magnetizations at 20 K along [100] and [120] directions have a slope change at 6 and 9
kOe, respectively, indicating a spin-flop transition or spin rotation in the ab plane. The temperaturedependence of the dielectric constant and pyroelectric currents along [100] and [120] directions show amagnetic-field-induced peak near the antiferromagnetic transition temperature of TN = 32 K, respectively,
proving a sizable magnetodielectric effect and magnetoelectric coupling. With the increase of magnetic
field, the electric polarization increases to 128 μC/m2 along [120] axis under applied magnetic field of
40 kOe.
Keywords: Corundum-type Structure, Magnetodielectric Effect, Magnetoelectric Coupling
Email: ‡sxcao@shu.edu.cn, *jinke_bao@shu.edu.cn

49

P9-Growth of lithium niobate single crystals using thefloating zone method and changes in physical properties due
to Na addition
S. Kawara1, T. Hashizume2, A. Saiki2
1Department of Material Science and Engineering, University of Toyama, Toyama, Japan
2School of Sustainable Design, University of Toyama, Toyama, Japan

Piezoelectric are useful as actuator and sensor elements. Lead zirconate titanate (PZT) is a typicalpiezoelectric ceramic material. However, soil and marine contamination of lead is a issues. In this study,
we focused on single crystals of lithium niobate because it is a ferroelectric material and environmentallyfriendly compared to PZT.
Single crystals were grown by using the Floating Zone Method (FZ method).Their piezoelectric
properties were evaluated. The crystals grown were partly polycrystalline. The grown crystals were
measured X-ray diffraction and elemental analysis. As a result, the grown crystal was confirmed to be asingle crystal of lithium niobate. The admittance of the sample was measured using two-terminal method.
The piezoelectric resonance was confirmed. From this, the piezoelectricity of the sample was checked.
Single crystals were also grown adding a certain amount of sodium niobate. As a result, a change ofphysical property appeared in the analysis results compared to lithium niobate.
Keywords: Single crystal, Piezoelectric effect, Electronic components
Email: saiki@sus.u-toyama.ac.jp50

P10-Flux Pinning Evolution of Pb Multilayer Thin Films in
the purely repulsive interaction system
L. X. Gao1, J. Y. Ge1,2*1Materials Genome Institute, Shanghai University, 200444 Shanghai, China
2Shanghai Key Laboratory for High Temperature Superconductors, Shanghai University, 200444 Shanghai, China

Artificial Pb multilayer films were prepared to act as an alternative approach to study multicomponent
superconducting systems. The additional repulsive length and the coupling strength amongsuperconducting films were regulated by increasing the thickness of insulting films. The magnetization
measurements were performed to clarify the effect of the competition between the repulsive vortex
interactions on the macroscopic superconductivity of Pb multilayer films. The vortex phase diagram andthe optimum critical current density have been determined. Furthermore, the second magnetization peak
appears because the upper layer provides the weak pinning sites to localize the flux lines. The pinningbehaviors switches to the mixed type with the increase of the insulting layer thicknesses. Our results
open a new perspective to the study and related applications of the multilayer superconducting films.
Keywords: Multilayer superconducting film, Competing interaction, Flux pinning mechanism
Email: gaolixin@shu.edu.cn

51

P11-Mechanical properties and precipitation of Al4mol%Zn-2mol%Mg-1mol%Cu alloy
Y. Sekiguchi1, T. Tsuchiya2, S. Lee2, S. Ikeno3, K. Matsuda2†, K. Shibata4, H. Matsui4, T. Yoshida4, S.
Nishikawa4, S. Murakami4
1Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, 930-8555, Japan
2 Faculty of Sustainable Design, Department of Materials Design and Engineering, University of Toyama , Toyama,

Toyama, 930-8555, Japan
3Professor emeritus, University of Toyama, Toyama, Japan
4AISIN KEIKINZOKU Co.,Ltd., Imizu, Toyama, 934-0031, Japan

7xxx series alloys (Al-Zn-Mg alloys) have a high strength compared to other Al alloys due to its good
age hardenability. The precipitation sequence of this series alloy is known to be as follows:
S.S.S.S. → G.P.zone → η’, T’ → η, T
Conventionally, these alloys have been strengthened by dispersion of fine precipitation by aging
treatment. These days, it is needed that higher strength materials for automobile part in response to thetrend of lightweighting. Al-Zn-Mg alloys are good materials for satisfying the industrial needs. However,the limitation is clear, and it is needed stronger mechanical property. We have focused on the effect of
Cu in Al-Zn-Mg alloy and reported better mechanical property with formation of fine precipitation. Also,
we have reported that Zn/Mg=2 was shown the maximum hardness with aging treatment in Al-Zn-Mg
alloys. Based on previous results, Cu and grain refiner (Zr, Ti) were added to the Zn/Mg=2 alloys andinvestigated age hardening behavior and mechanical properties in Al-Zn-Mg alloys.
The purpose of this study was to produce alloys with even higher strength and ductility and to investigate
the effect of grain refiner. Two kinds of alloys were fabricated by casting of Al-4.0%Zn-2.0%Mg-1.0Cu
alloy and Al-4.0%Zn-2.0%Mg-1.0Cu-Ti-Zr (in at.%) alloy. The alloys are denoted as ZM42HC andZM42HCTZ, respectively. Homogenization treatment was conducted at 748K for 86.4ks, then samples
were subjected to hot extrusion. Solution heat treatment was conducted at 748K for 3.6ks, and thenquenched in cold water. Heat treatment was performed by changing the aging temperature using silicone
oil bath. Micro-Vickers hardness was measured using Mitutoyo HM-101 (load: 0.98 N, holding time15s). Tensile specimens were cut from extruded sheets with 0.8 mm×6.0 mm of cross-section and 17.5mm of gauge length.

The peak-aged samples at 393 K, and were fractured at room temperature using

Instron type tensile machine. TEM (Topcon EM-002B) observation was conducted under the accelerated
voltage of 120kV.
Keywords: Al-Zn-Mg, Grain refiner, TEM
Email: †ikenolab@sus.u-toyama.ac.jp52P12-Crystal growth and physical properties evolution in
Ni1-xCoxTe2-δ system
W. B. Wu1, ‡, Y. Q. Chen1, L. X. Gao1, L. Z. Zhang1, Q. L. Xiao1*, J. Y. Ge1,2*
1 Materials Genome Institute, Shanghai University, Shanghai 200444, China.
2 Zhejiang Laboratory, Hangzhou, 311100, China.

Transition metal tellurides have been widely studied for their diverse crystal structures and exotic
physical properties such as large magnetoresistance, charge density waves, superconductivity,
ferromagnetic, and topological properties. NiTe2 has recently been found to be a Dirac semimetal,
allowing it to achieve exotic properties by pressure and doping. We synthesize a series of Ni1-xCoxTe2-δsingle crystals by the standard solid-state reaction method. EDX and XRD tests confirm Co issuccessfully doped into the crystal structure. Normalized resistance of the samples shows metallic
behavior. Magnetization measurements show that, in the doping range of x = 0.12 ~ 0.62, the samples
exhibit coexistence of ferromagnetic and paramagnetic phases above the transition temperature Tt. By
using the combined Curie–Weiss and Spin-wave model, the antiferromagnetic to ferromagnetictransition is found to occur as the temperature drops below Tt. The magnetic transition is attributed to
the Te vacancies, which can be explained using the BMP model. A magnetic phase diagram for Ni1xCoxTe2-δ system is constructed.

Keywords: Ni1-xCoxTe2-δ single crystals, Magnetic behavior, Antiferromagnetic to ferromagnetic transition
Email: wwweibin@shu.edu.cn

53

P13-Superconductive Property of Nb3Al/Al Composite
Materials
S. Yamaguchi1‡, K. Mastuda1, T. Namiki1, and K. Nishimura1
1 Material Science and Engineering Major, Graduate School of Science and Engineering, Toyama University

Several superconductors with the A15-type crystal structure have relatively high superconducting
transition temperatures. Among them, Nb3Sn has been widely used due to the high superconducting
critical magnetic field. Nb3Al has the same crystal structure, which is more resistant to strain/stress andhas a higher critical field at its stoichiometric composition than Nb3Sn. Although Nb3Al has somesuperior superconducting properties, the manufacturing process is complex and the workability is poor.
Thus, we fabricated Nb3Al/Al composites by the three-dimensional permeation casting (3DPC) method
to improve the workability. In this study, we prepared three samples using Nb3Al particles and molten
metal of pure Al or Al-10at%Si alloy, with different molten metal temperatures and cooling methods.
The preparation conditions were, 1) molten Al at 800°C/air cooling, 2) molten Al at 800°C/quench in ice
water, and 3) molten Al-10at%Si alloy at 650°C/quench in ice water. X-ray diffraction measurements ofthese samples showed that some of the Nb3Al particles reacted with molten Al in all the samples, leading
to the non-superconducting NbAl3. SEM observations revealed, therefore, that the surfaces of the Nb3Al
particles were covered by the NbAl3 layer. The magnetization and electrical resistivity measurements
indicated the noticeable superconducting transition signals with each sample, but the diamagnetic signalof the superconducting transition is far smaller than the ideal value, and the electrical resistivity did notreach zero below the transition.
Keywords: Superconductor, Nb3Al, 3DPC
Email: ‡m2171530.ems@u-toyama.ac.jp54P14-The effect of granularity on superconducting properties
of Pb films
J. Y. He1, H. F. Qin, Q. L. Xiao, J. Y. Ge1,*
1Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China

In our research, the superconducting Pb films with different grain sizes and morphology were preparedby using low temperature electron beam evaporation technique on various substrates. With decreasing

grain size, the upper critical field of Pb films increases and Pb films are prone to feature flux
avalanche at low magnetic fields in the M - H curves. Further analysis suggests that withdecreasing grain size the pinning mechanism evolves from a mixed δl to the δTc pinningmechanism. Our results open a new perspective to the study of pinning mechanism for
granular superconductors and is beneficial to the potential application of manipulating vortex
pinning by adjusting the granularity of superconducting films
Keywords: The superconducting Pb films, Different substrates, Flux avalanche, Pinning mechanism
Email: 1035605141@shu.edu.cn

55

P15-DSC analysis and TEM microstructure observationof Al-1.0Mg2Ge alloy
S. Ukita1, S. Murakata1, T. Tsuchiya2, S. Lee2, S. Ikeno3, and K. Matsuda2, †1Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, 930-8555, Japan
2 Faculty of Sustainable Design, Department of Materials Design and Engineering, University of Toyama , Toyama,

Toyama, 930-8555, Japan
3Professor emeritus, University of Toyama, Toyama, Japan

Al-Mg-Ge alloys, as well as Al-Mg-Si alloy, are treated as Al-Mg2Ge pseudo-binary type alloys andhave been researched to analyze aging precipitation of Al-Mg-Si alloys. There are several reports on the
aging precipitation process of Al-Mg-Ge alloys, and it is basically the same as that of Al-Mg-Si alloys,i.e., supersaturated solid solution → G.P. zone → β' phase → β phase (Mg2Ge).However, it has beenreported that Al-Mg-Ge alloys have a unique aging precipitation process in which clusters are formed ina higher density and are less likely to grow compared to Al-Mg-Si alloys. It was also reported that typeA precipitates formed in Al-Mg-Si alloys of excess Si type were also observed in Al-1.0 mass%Mg2Ge
alloys of balanced composition, but the aging phenomenon was not fully clarified. Therefore, the purposeof this study is to understand the behavior of aging precipitation of Al-Mg-Ge alloy from the initial stageof precipitation using differential calorimetry (DSC), Vickers microhardness tester and high-resolution
transmission electron microscopy (HR-TEM). DSC measurements performed at heating rate of 10℃/min
and a temperature range of 25 to 500℃. DSC measurements stopped at aimed temperature and cooled
down to room temperature. Then, samples were conducted hardness measurement and prepared TEM
samples. Microstructure observation was carried out using HR-TEM(Topcon EM-002B) under
accelerate voltage of 120kV.
Keywords: Al-Mg-Ge, Precipitate, TEM
Email: †ikenolab@sus.u-toyama.ac.jp56P16-Yttrium and Praseodymium doped proton conducting
electrolytes with improved sinterability.
T. Miyazono1, T. Hashizume2, A. Saiki2
Department of Material Science and Engineering, University of Toyama, Toyama, Japan

1

School of Sustainable Design, a University of Toyama, Toyama, Japan

2

Proton conductors are widely used in hydrogen sensors and fuel cells. Hydrogen sensors and fuel cells
in which the proton conductor barium zirconate is used are clean energy materials. Barium zirconate ischemically stable. Barium zirconate powder is industrially sintered at high temperatures, but at that time
volatilization of barium during sintering is a problem. In this research Barium zirconate doped withpraseodymium (Pr) and yttrium (Y) can improve sinterability issues and improving the proton
conductivity. We investigated the effect of concentration dopants on the sintering behavior and oxygen
defects of the proton-conducting electrolyte materials by varying the concentration of Pr and Zirconium(Zr) at the ‘B’ site of the perovskite structure (BaZr0.70Y0.20Pr0.10O3-δ, BaZr0.75Y0.20Pr0.05O3-δ’,BaZr0.80Y0.20O3-δ”) while keeping the concentration of Y constant. The Pr doping successfully improved
the sinterability even at the temperature of 1450 ℃.
-2

The increase in the concentration of Pr improved2

the proton conductivity by 10 S/cm at the temperature of 150℃.
Keywords: Barium zirconate, Sinterability, perovskite, Proton-conducting
Email: ‡saiki@sus.u-toyama.ac.jp57P17-Superconducting state properties of Cu-doped NbTe2
single crystals
J. F. Chen1,2,3, Z. J. Feng1,2,3,4‡
1Materials Genome Institute, Shanghai University, Shanghai, 200444, China
2Zhejiang Laboratory, Hangzhou 311100, China
3Shanghai Laue Sci. & Tech. Institute, Shanghai, 200444, China
4Shanghai Key Laboratory of High Temperature Superconductors, Department of Physics, Shanghai University,

Shanghai, 200444, China

NbTe2 is a monoclinic quasi-two-dimensional layered semimetal. This paper reports the change ofphysical properties of NbTe2 single crystals under the action of copper substitution. We found that
doping Cu can enhance the superconductivity of Nb1-x(Cux)Te2 single crystal samples, increasing thesuperconducting transition temperature from 0.5 K to 3 K. As the doping concentration of Cu element
increases to x=0.1, the superconducting transition temperature disappears. The zero-field ab-surface
resistivity ρxx shows that the sample is metal. Magnetoresistance changes of up to 23% were observed
at a magnetic field of 13 T without any tendency to saturate, and linear magnetoresistance was observed
at high magnetic fields. The curve of the Hall resistance changing with the magnetic field at the same
temperature has a linear relationship with the magnetic field, and the slope is positive, indicating that thecarrier type is mainly hole-type carriers. These results suggest that Superconductivity of Nb1-x(Cux)Te2
enhanced by Doping Cu may provide a new platform for our understanding of superconductivity intransition metal dichalcogenides.
Keywords: Electronic structure, superconductor, transition metal dichalcogenides
Email: fengzhenjie@shu.edu.cn

58P18-Effect of injection molding conditions of carbon fiber
reinforced PEKEKK resin on retainer
K. Yabashi1, T. Isezaki1, T. Tsukeda2, T. Aida2, Y. Funato3, and S. Kajikawa4
1University of Toyama, Graduate School of Science and Engineering, Toyama, 930-8555, Japan
2University of Toyama, Faculty of Sustainable Design, Toyama, 930-8555, Japan
3TC Toyama Co., Ltd., Toyama, 930-0274, Japan
4Makino Milling Machine Co., Ltd., Advanced Technology Section, Kanagawa, 243-0303, Japan

In recent years, fuel efficiency improvement in the transportation equipment field, such as aircraft andautomobiles, has become an issue due to the reduction of carbon dioxide emissions for global warming
control and unstable oil prices. Carbon fiber-reinforced plastics, which are made by mixing carbon fibers
and plastics, have excellent specific strength and specific rigidity, and are now widely used in aircraft,
automobiles, ships, and other transportation equipment, as well as in machine tools. In addition, as
various types of equipment become smaller, lighter, and more efficient, the development of engineering
plastics with high performance and multifunctionality has been remarkable, and the operating
environment temperatures of plastic parts using these plastics have become increasingly hotter. In
machine tool spindles, the development of machining centers since 1975 has led to a rapid increase indemand for higher speeds to improve cutting efficiency, and the development has focused on high-speed
technology. As spindle speeds increase, new materials must be applied to bearings (rolling elements,
inner/outer rings, and retainer), and design methods and analysis techniques must become moresophisticated.
In this study, we focused on poly-ether-ketone-ether-ketone-ketone (PEKEKK) resin, which has evenbetter heat resistance than that of poly-ether-ether-ketone (PEEK), thermoplastic material with excellent
performance among heat-resistant resins. PEKEKK resin has excellent heat resistance characteristics,
however, requires high melting temperatures during injection molding. It has also been found that adding
carbon fiber to the base resin material can improve its mechanical properties. PEKEKK resin was usedas the base material, and a mixed material with 30 wt% carbon fiber added as reinforcement was used as
the test material. The retainer was injection molded using a pre-plunger type machine as the molding
method.
Injection molding conditions were set at a resin temperature of 420°C, an injection speed of 75 mm/s,
and a holding pressure of 420 MPa. The position at which the injection process is switched to the holding
pressure process (holding pressure switching position) was varied during the molding process. The
influence of injection molding conditions on the retainer at that time was evaluated using roundness, aswell as weight, tensile test, DSC, etc., to study the optimal injection molding conditions.
Keywords: PEKEKK, Carbon fiber, Injection molding, Roundness
Email: s1890260@gmail.com

59

P19-Microstructure and microwave absorption properties of
FeCoNiCuGe high-entropy alloys
Y. F. Zhang1,2,3, J. Y. He1,2, J. F. Chen1,2,3, Y. H. Chen1,2,3, and Z. J. Feng1,2,3,4,†
1Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China
2Zhejiang Laboratory, Hangzhou 311100, China
3Shanghai Laue Sci. & Tech. Institute, Shanghai, 200444, China
4Shanghai Key Laboratory of High Temperature Superconductors, Department of Physics, Shanghai University,

Shanghai, 200444, China

Owing to the development of electronic information technology, electromagnetic (EM) wave has been
widely used in many fields, such as information communication, biomedical, military action. However,the following problem, EM pollution, has been increasingly extrusive. EM wave absorption materials
possessing exceptionally high EM energy loss efficiency has attracted many researchers’ attention. Highentropy alloys (HEAs) possess complex structural and magnetic properties due to those multi-element
phases and lattice distortion. Phase evolution, annealing behaviors, microstructure, magnetic and EM
wave absorption properties of FeCoNiCuGe HEAs powders synthesized by mechanical alloying areinvestigated. The microstructure and EM wave absorption properties of HEAs powders after high-energy
planetary ball milling for different time (1 h, 10 h, 30 h, 50 h, 70 h) and different annealing temperature(623 K ,723 K, 823 K) are compared. This work provides precious and insightful information for
introducing high-entropy soft magnetic alloys to improve the properties of EM wave absorption materials
applied in increasingly severe environments.
Keywords: Microstructure, Microwave absorption, High-entropy alloys
Email: ‡fengzhenjie@shu.edu.cn

60P20-Investigation of manufacturing conditions of single roll
rapidly solidified ribbon for anode materials of Mg
rechargeable batteries by using thermal-hydraulics CAE
Y. Kirimoto1, T. Tsukeda2, T. Aida2, Y. Nemoto3, M. Ikeda4, H. Tabata4, H. Kurihara5, M. Suzuki6
1University of Toyama, Graduate School of Science and Engineering, Toyama, 930-8555, Japan
2University of Toyama, Faculty of Sustainable Design, Toyama, 930-8555, Japan
3Flow Science Japan, Inc. Engineering Department Senior Sales Engineer, Tokyo, 111-0041, Japan
4Chuetsu Metal Works Co., Ltd., Advanced Technology Laboratory, Toyama, 930-0298, Japan
5Saitama Industrial Technology Center (SAITEC), Saitama, 333-0844, Japan
6Toyama Prefectural University, Faculty of Engineering, Toyama, 939-0398, Japan

In recent years, the social implementation of rechargeable batteries used for the electrification oftransportation equipment and renewable energy has become an issue to meet sustainable development
goals, and the development of innovative rechargeable batteries is required. Magnesium rechargeable
batteries are attracting attention as next-generation rechargeable batteries because of their resource
abundance, cost, safety, and high electrical capacity per volume compared to conventional lithium-ion
rechargeable batteries.
Our joint research team focused not only on the electrochemically active magnesium composition ofribbon for the negative electrode materials of magnesium rechargeable batteries, but also on the
production process, focused on the single roll type liquid quenching and rapid solidification method,which can be produced at a lower cost. The single roll method is a mass production technology in whichmolten metal is rapidly cooled and solidified on the outer circumference of a high-speed rotating roll tocontinuously produce metal ribbons in a single process. Not only does it have the advantages of highproductivity and easier equipment compared to twin rolls and rolling in terms of production technology,
but it is also suitable for magnesium alloys that have low plastic workability at room temperature due totheir crystalline structure.
The technical key to the single roll method is to make the nozzle opening that spurts out molten metalslit-shaped and to keep the distance between the nozzle and the rolls close to an appropriate distance. By
keeping the nozzle and rolls close together, surface tension acts on the molten metal to form a puddle.
The major control factors in the single roll method are the nozzle slit size, jetting pressure, roll peripheral
speed, nozzle-to-roll distance, and molten metal temperature, which govern the thickness, width, andsurface properties of the ribbon.
In this study, the optimal processing conditions were examined by comparing CAE analysis with ribbon
actually manufactured, with the aim of further improving manufacturing conditions using the same
method, such as length discontinuities, thickness, and surface properties of ribbon. The CAE analysis

61software used was Flow3D®, a thermal flow CAE software manufactured by Flow Science, Inc. We
specifically various process parameters such as injection pressure and roll peripheral speed for evaluation.
Keywords: Mg rechargeable batteries, Single roll rapidly solidified, Thermal-hydraulics CAE
Email: d2272101@ems.u-toyama.ac.jp62P21-Magnetic phase transitions and giant magnetic
coercivity in Mn2.45Fe0.58Sn0.97 single crystals
W. H. Shen1, Y. L. Huang2, X. Y. Yao3, F. Y. Qi4, G. X. Cao*
1Materials Genome Institute, Shanghai University, Shanghai, 200444, China

The magnetic transition and transport properties of the Mn2.45Fe0.58Sn0.97 single crystals with a hexagonal
structure have been investigated. This noncollinear antiferromagnetic single crystal exhibits a Neeltemperature of 297 K. After cooling from 297 K, a magnetic phase transition from noncollinear
antiferromagnetism to ferromagnetism occurs at 200 K due to the tilting of magnetization towards c axis.
Below this temperature, a topological Hall effect (THE) starts to appear due to the non-vanishing scalarspin chirality arising from the noncoplanar spin structure. Interestingly, the topological Hall resistivity isfound to be as high as about 4 μΩ cm at 100 K in the xy-plane (0001). When the applied magnetic field
is parallel to the c-axis, another magnetic transition occurs at 187 K, resulting in the coexistence offerromagnetism and antiferromagnetism at low temperature. Therefore, a giant coercivity up to about 30
kOe is obtained at 2 K due to the pinning effect of antiferromagnetism on the ferromagnetic phase.
However, when the external magnetic field is perpendicular to the c-axis, the magnetization curve has
almost no hysteresis. Therefore, the material is easily magnetized perpendicularly and has broad
application prospects in the field of perpendicular magnetic recording.
Keywords: magnetic transition, non-collinear antiferromagnet, topological Hall effect
Email: guixincao@shu.edu.cn

63

P22-Effect of process parameters on anode activity of Mg6%Al-3%Ca alloy ribbons manufactured by single-roll
atmospheric rapid solidification method for Mg
rechargeable batteries
K. Fuke¹，T. Tsukeda¹，T. Aida¹, M. Ikeda²，H. Tabata²，H. Kurihara³，M. Suzuki⁴
1University of Toyama, Toyama, 930-8555, Japan
2Chuetsu Metal Works Co., Ltd., Toyama, 930-0298, Japan
3Saitama Industrial Technology Center, Saitama, 333-0844, Japan
4Toyama Prefectural University, Toyama, 939-0398, Japan

In recent years, lithium-ion batteries have been used in various devices such as information mobile
devices and electric vehicles, but the uneven distribution of resources, the safety of components, and thelimitations of high capacity require the development of new rechargeable batteries. High energy density
is necessary for the development of next-generation rechargeable batteries, and Mg, Ca, Al, and otherlow-cost multivalent metals with high Clark's number are promising as anode materials from theviewpoint of securing resources and reducing costs. In particular, it has been reported that magnesium(Mg) rechargeable batteries do not precipitate in dendrite form when charged using Mg metal, which iseasy to handle, as the negative electrode, enabling batteries with metal negative electrodes that are freefrom concerns about short circuits and ignition.
In this study, a composition of Mg-6mass%Al-3mass%Ca was selected (hereinafter referred to as AX63),
and the anode material was fabricated by the rapid solidification method without using a vacuum
chamber and vacuum exhaust system. We aimed to establish atmospheric manufacturing conditions forthe purpose of reducing production costs and producing sound ribbons.
Specimen AX63 was made by casting high-purity Mg (99.9%), high-purity Al (99.9%), and Mg-Ca
mother alloy, weighing them to obtain the target composition. After homogenization treatment in anelectric furnace at 420℃ for 20 h and surface cutting, the material was processed using a 400ton verticalhydraulic press at an extrusion temperature of 350℃, an extrusion ratio of 7.06, and a ram speed of 1
mm/s. The billets were made into 19 mm diameters. billets and used as melting raw material for rapid
cooling and solidification. In the single roll type rapid cooling and solidification apparatus, an oxygenfree copper cooling roll of 20 mm in width and 200 mm in diameter without cooling water was used. A
cut raw material billet of φ19 mm × 10 mm was inserted into a crucible with a 10 mm wide nozzle madeof SUS430, heated and melted by a high frequency coil, and injected with Ar gas onto a high-speed
rotating roll to produce a ribbon.
The production conditions were air atmosphere, injection pressure of 0.05 MPa, injection temperature
fixed at 757℃ to achieve a superheat of 150℃, distance between nozzle and cooling roll, and peripheral

64speed of cooling roll were varied to evaluate ribbons under a total of 9 conditions. The electrochemical
activity of AX63 ribbon was evaluated by constant-current charge-discharge tests. In the observation of
surface properties, the length and weight of ribbon samples made under each condition were measured,and the appearance of the front and back surfaces were photographed to evaluate soundness at the visuallevel. The thickness of the ribbon was measured using a digital microscope after each ribbon specimen
was embedded in cold-impregnated resin. Ten cross sections of ribbon were measured and the averagevalue was obtained. Identification of the crystalline phases were performed using XRD. The orientationof each ribbon was also evaluated based on XRD measurements.
Keywords: Mg-Al-Ca alloy, Rechargeable batteries, Single-roll atmospheric rapid solidification method
Email: kousukedenden@gmail.com

65

P23-High-throughput X-ray characterization of discrete
component samples of rare earth-doped thermal barrier
coating materials
G. Wu1, X. M. Song2, Y. F. Zhang1, Y. Zeng2, Z. J. Feng1,‡
1Materials Genome Institute, Shanghai University, Shanghai 200444, China
2Analysis and Testing Center for Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of

Sciences, Shanghai 200050, China

With the continuous investment of researchers in the research and development of materials science, thehigh-throughput X-ray characterization technology is widely used in the process of material research anddevelopment, which greatly improves the research and development efficiency of new materials and isalso an important tool for material genome engineering research. In this paper, a high-throughput X-ray
characterization system is designed, and the X-ray source can perform high-precision X-Y twodimensional plane translation, and under the condition of ensuring the quality of the data sample, multiple
discrete samples can be detected in a very short time, and the influence of different content of rare earth
element doped thermal barrier coating materials on their structural phase stability is explored.
Keywords: High-throughput X-ray characterization, Thermal barrier coating, Rare earth elements
Email: ‡ fengzhenjie@shu.edu.cn

66P24-Effect of Ag Addition on Corrosion Properties of
Mg-Al Alloys
G. Ota2, K. Sarayama1, K. Nakano1, Y. Simada, 1 A. Morihiro 2, M. Hatakeyama3, S. Sunada3, K. Sato4
1Graduate School of Material Science and Engineering for Education, University of Toyama, 3190 Gohuku

Toyama, 930-8555, Japan
2Undergraduate Student of Department of Materials Design and Engineering, University of Toyama, 3190 Gohuku

Toyama, 930-8555, Japan
3Graduate School Material of Science and Engineering for Research, University of Toyama, 3190 Gohuku

Toyama, 930-8555, Japan
4Graduate School of Science and Engineering, Kagoshima University, Korimoto Kagoshima 890-0065, Japan

In the Ag added Mg-Al alloys, Miao et al. reported that Ag is unevenly segregated at the α-βinterfaces and in β phase. [1] Corrosion properties in such cases are not understood. In order toinvestigated corrosion behavior of α and β phase in the Mg-Al-Ag alloys, Mg-9Al (AM90), Mg9Al-0.5Ag (AQ905), Mg-43Al (β single phase), and Mg-43Al-2Ag (β-2Ag phase) were prepared
for the electrochemical measurements. Structural studies of β phases are carried out using X-ray
diffraction (XRD). Electron probe microanalysis (EPMA) was used to measure the distributions of
Ag in the AQ905. Anodic polarization curve measurements were performed in all samples. The
corrosion potential of the β-2Ag was higher than that of the β single-phase because of the higher
standard potential of Ag (E0 = +0.8 V), which has a higher standard potential than that of the β phase.
In AM90 and AQ905, the addition of Ag causes changes in corrosion potential and corrosion current
density. Details of these results will be discussed in the conference.
Keywords: Magnesium alloy, Corrosion, Polarization test,
Email: ‡ s1990203@ems.u-toyama.ac.jp67P25-Stress corrosion behavior of friction stir welding joint of
7N01 aluminum alloy
Y. Z. Pan1, S. W. Duan2, F. Guo1, K. Matsuda3, T. Wang1, Y. Zou4
1Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials,

School of Materials

Science and Engineering, Shandong University, Jinan, 250061, China
2College of Nuclear Equipment and Nuclear Engineering, Yantai University, Yantai 264005, China
3Department of Materials Design and Engineering, Faculty of Sustainable Design, University of
Toyama, Toyama 930-8555, Japan
4Shandong Engineering & Technology Research Center for Modern Welding, Shandong University,
Jinan, 250061, China
The friction stir welding joint of 7N01 aluminum alloy has strong stress corrosion sensitivity due to theinhomogeneity of microstructure. In this paper, the stress corrosion behavior of 14 mm thick plate 7N01T4 welding joint and base metal was investigated by means of electrochemical impedance spectroscopy,
slow strain rate tensile test and electron back scattered diffraction. The results show that the chargetransfer resistance of the welding joint is obviously lower than that of the base metal. The lowest
impedance at the joint is 698 Ωcm2, but the lowest impedance is 1082 Ωcm2 at the base metal.The lowest
Rct value at the weld is only 64.5% of the base metal. The thermal-mechanical affected zone on the rearside is the worst area of the resistance to stress corrosion. There are more deformed grains and larger
Schmidt factor close to 0.5 in this area, and the different grain orientation can easily lead to theconcentration of internal tensile stress and the formation of crack propagation.
Keywords: 7N01 aluminum alloy; Friction stir welding joint; Stress corrosion; Slow strain rate tensile;
E-mail: panyz@mail.sdu.edu.cn

68P26-B substitution effect on magnetic properties of HoAl2
T. Fujimoto1‡, T. Namiki 1, and K. Nishimura1
Material Science and Engineering Major, Graduate School of Science and Engineering, Toyama

1

University
In recent years, magnetic refrigeration using magnetic materials has been widely studied as an efficientcooling method for hydrogen liquefaction. Among them, the HoB2 with the Curie temperature (TC) of
15 K has been found to exhibit the large magnetic entropy change |ΔSM(μ0H:5 T→0 T)| of 40.1 J kg
K−1 near TC.[1] Previous studies have reported that Al substitution in HoB2 causes a separation into
two phases, HoB2 and HoAl2, and an increase in the transition temperature of HoAl2.[2] This has been
attributed to an increase in the volume of HoAl2 due to the intrusion of B atoms into HoAl2. Therefore,
we investigated the effect of B-substitution in HoAl2 (HoAl2-xBx, x = 0, 0.1, 0.2, 0.3, 0.4, 0.5). The
samples were prepared by an arc-melting process in an Ar atmosphere. From the magnetisation
measurements, two ferromagnetic transitions at 30 K (TC1) and 16 K (TC2) were observed for samples
above x = 0.2. The observed TC1 and TC2 little changed regardless of the amount of B. It was observedthat the volume fraction of HoB2 increased as the amount of B increased.
Keywords: Magnetocaloric effect, B substitution, HoAl2
Email: ‡m2171524.ems@u-toyama.ac.jp69P27-Optimization of the mechanical properties of SAC105based solder alloys via machine learning
S. T. Yu1, K. D. You1, B. Cao1, Z. Q. Dong1*, J. C. Zhang1, T. Y. Zhang1
1Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China

The rapid development of electronic technologies imposes higher requirements on interconnect materials.
Sn-Ag-Cu(SAC) based lead-free solder alloy is one of the major class interconnecting materials used inelectronic industries. Tremendous efforts have been devoted to improving the properties of SAC solder
alloys. Adding alloying elements is one effective approach. In the current study, the mechanicalproperties of SAC105 based solder alloys were optimized by using an Bayesian optimization strategy
based machine learning approach. The strategy uses the upper confidence boundary function to balance
the exploration and exploitation tradeoff for searching of the alloys with the enhanced properties.
Meanwhile, a unified target function composed of the two conflicted properties (tensile strength andductility) was defined for directing the solder alloy design. After three rounds iteration design loops
integrated with the experimental validation, solder alloys which exhibit the evident improved mechanicalproperties were obtained. The designed new SAC105 based solder alloy demonstrates an outstanding
mechanical property, yielding a significant improvement in tensile strength (35% improvement vs.
SAC105) with an acceptable ductility (>20 %). The experimental results show a good agreement with
the ML forecasts, demonstrating that ML is a powerful tool for designing lead-free solder alloys with
optimized mechanical properties.
Keywords: Lead-free solder; Machine learning; Mechanical properties.
Email: * zqdong@shu.edu.cn

70P28-MoSe2-sensitized water splitting assisted by C60dendron on the basal surface
H. K. Nguyen1, T. Matsuura2, T. Tajima2, M. Yamagami1, K. Yashima1, T. Matsubayashi1, N.
Nishiyama1, T. Hayashi1, Y. Takaguchi1,*
1 Department of Material Design and Engineering, Faculty of Sustainable Design, University of Toyama, Toyama

930-8555, Japan
2 Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan

Transition metal dichalcogenides (TMDs) have attracted much attention because of their unique twodimensional nanostructure and outstanding properties. Although there are many reports on the hydrogen
evolution reaction (HER) using TMDs as an electrocatalyst or a co-catalyst, clear-cut examples of HER
photosensitized by TMDs are quite rare. Herein, we prepared water-dispersible MoSe2/fullerodendron
nanohybrids by the physical modification of the basal surface of MoSe2 using fullerodendron to explore
its photosensitizing activity for HER from water. Their 2D/0D mixed-dimensional heterojunction(MoSe2/C60) is expected to generate a charge-separated (CS) state via photoinduced electron transferfrom MoSe2 to C60. Fortunately, we observed efficient HER (70 mol/h) from water using
MoSe2/fullerodendron nanohybrids in the presence of methyl viologen (MV2+), Pt-nanoparticle, and 1benzyl-1,4-dihydronicotinamide (BNAH). Action spectra for this HER clearly show MoSe2 acts as not a
co-catalyst but a photosensitizer in this reaction system. Then, upon photoexcitation of MoSe2 by 800nm-illumination, we observed a steady generation of hydrogen (1.1 mol/h), of which external quantum
yield (EQY) was 0.0027%.
Keywords: MoSe2, C60, Mixed-dimensional heterojunction, H2 evolution, Photocatalyst, Water splitting
Email: m22c1625@ems.u-toyama.ac.jp71P29-Magnetic properties of Al-4%Cu(-Mn, -Fe) alloy
E. Hida1,‡, T. Namiki1, and K. Nishimura1
1Material Science and Engineering Major, Graduate School of Science and Engineering, Toyama University

In this study, the effect of transition metal additives on the precipitate microstructure of Al-Cu alloys
was investigated via x-ray diffraction and magnetization measurements. We focused on the magnetic
elements, Mn and Fe, which are often contained as impurities in aluminum alloys. Samples of Al - 4 %Cu – x % Mn (x = 0.5 , 1 , 2 , 3 , 4 , 5) and Al – 4 % Cu – y % Fe (y = 0.5 , 1 , 2 , 3 , 4 , 5) ( at. %) wereprepared by arc melting.

Magnetization measurements were performed in the temperature range from10 to 300K and in an external magnetic field of 7 T.

Temperature dependences of the magnetization

show that in the Al-Cu-Mn alloys magnetization increased with increasing the Mn concentration, while
little change was observed among the Al-Cu-Fe alloys.
nonmagnetic Fe compound, Al7Cu2Fe, was found.

On the XRD patterns of the Al-Cu-Fe alloys,

Contrarily, X-ray diffraction measurements showed

few peaks of Mn or Mn compounds in the Al-Cu-Mn alloys. Thus, the solute Mn ions were considered
to be solidly dissolved.

Additionally, magnetic properties of single-phase Al7Cu2Fe, Al13Fe4, Al6Mn,

Al2Cu, and Al4Cu9 compounds were examined.
Keywords: magnetic properties, Al-Cu-Mn alloy, Al-Cu-Fe alloy
Email: ‡m2171522@ems.u-toyama.ac.jp72P30-Magnetocaloric properties of Ho1-xGdxB2
S. Yosinaga1,‡, T. Namiki 1, K. Nishimura 1
1Grad. Sch. of Sci. and Eng. for Edu., Univ. of Toyama

HoB2 has shown a very large magnetic entropy change (|ΔSM|) of 40.1 (J kg-1 K-1) in a magnetic fieldchange of 5 T near the ferromagnetic transition temperature (TC = 15 K) near the boiling point ofhydrogen [1]. This finding makes HoB2 a good candidate for a magnetic refrigeration material to liquefyhydrogen gas. Substitution of Ho with Dy (Ho1-xDyxB2) decreased |ΔSM|, but increased TC [2]. In thisstudy, we report the effect of Gd substitution on the magnetocaloric properties of HoB2. Since the deGennes factor of Gd is larger than that of Dy, Ho1-xGdxB2 is expected to increase TC with increasing x.
The samples were prepared by arc melting method. Powder X-ray diffraction results show that the main
phase is an AlB2-type structure (P6/mmm). Then, magnetization and specific heat measurements were
performed. From the magnetization measurements, TC were evaluated to reach 17, 20, 22, and 26 K

at x = 0, 0.1, 0.2, and 0.3, respectively. The obtained |ΔSM| values of 31, 27, 27, and 21 J kg-1 K-1 at x
= 0, 0.1, 0.2, and 0.3, respectively, using Maxwell's relation. The Relative Cooling Power (RCP) obtainedby the product of |ΔSMMAX| and the width at half maximum (ΔTFWMH) were 5.8, 5.8, 6.5, and 6.2 J kg-1 at

x = 0, 0.1, 0.2, and 0.3, respectively. The decrease in |ΔSMMAX| and the increase in ΔTFWMH withincreasing in x resulted in the almost unchanged RCP. Ho1-xGdxB2 was found to have excellent
magnetocaloric properties at high temperatures.
[1] Pedro Baptista de Castro et al., NPG Asia Mater., 12, 35 (2020)[2] Pedro Baptista de Castro et al., Sci. Technol. Adv. Mater., 21, 849 (2020)
Keywords: magnetocaloric effect, substitution, HoB2
Email: ‡m2171532@ems.u-toyama.ac.jp73P31-Superconductivity of La (111)/Si (100) thin films
C. Y. Wu1, Y. Z. Wang1, R. H. Ma1, J. Han1, J. Wang1, F. Chen1,*
1Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China

As one of the rare-earth elements, lanthanum and its compounds, such as LaB6 and LaH10, exhibit
unique physical and chemical properties, which have attracted lots of interests. Here we synthesize La
epitaxial films on Si (100) substrate by molecular beam epitaxy (MBE) method. The corresponding XRD
analysis suggests that the La films exhibits fcc crystal structure (β-La) with the (111) orientation.
Magnetic measurements indicate that the onset superconducting transition temperature is about 5.4 K. A
clear signature of the second magnetization peak (SMP) is observed in the isothermal magnetization
curves. We calculated the critical current density (Jc), which is greater than 10 MA/cm2 when T < 4 K.
Our results on La thin films may help to further understand the mechanisms of the second magnetization
peak.
Keywords: La film, Superconductor, Second magnetization peak (SMP)
Email: chf001@t.shu.edu.cn

74P32-Effect of rare earth addition on sodium tantalate
prepared by solution process
Y. Arata1, T. Hashizume2, A. Saiki2
1Department of Material Science and Engineering, University of Toyama, Toyama, Japan
2School of Sustainable Design, University of Toyama, Toyama, Japan

One performance of photocatalysts is the production of hydrogen and oxygen when fine semiconductor
powders are dispersed in water and irradiated by light. Sodium tantalate is another photocatalytic material.
The addition of a few mol% of rare earth elements to sodium tantalate increases the speed of hydrogenproduction.
In this study, the effect of the crystal structure of sodium tantalate on the addition of rare earth elements
was investigated. 3 types of sodium tantalate powders (La, and Sm or non-doped) were prepared byhydrothermal synthesis. The lattice constant of La-doped sodium tantalate was larger than the other two
using Rietveld analysis. The bonding state of the atoms and the ionic radius of La were larger than thatof Sm, which increased the amount of strain and affected the lattice constant.
Keywords: Photocatalysis, Hydrothermal synthesis, Rare earth elements, Atomic bonding, Ionic radius
Email：saiki@sus.u-toyama.ac.jp75P33-Effect of alloying elements on the microstructure andproperties of SnAgCu based lead-free solder alloys
T. Y. Li1, S. T. Yu1, Z. Dong1*, J. Zhang1
1Materials Genome Insititute,Shanghai University,200444, People’s Republic of China

Due to the harmful effect on human and environment, lead-bearing solder alloys have beenbanned in many countries. Developing the lead-free solders is essential to the rapid developmentof the modern electronic industries. Among all the lead free solders developed, SnAgCu (SAC)
solder alloy is one of the most promising lead-free solders and has already been used in theelectronic industry. However, the properties of SAC alloys still need to be improved to meet thehigher demand from the modern electric industry. In the current study, a variety of alloying
elements were introduced into SAC based solder alloys, and their effects on the microstructure
and properties of solder alloys were evaluated. The results show that adding proper amounts of Bi
and In into SAC solder alloys could improve both the strength and ductility. Meanwhile, the shear
strength of the BGA joints could also be improved. Further adding amounts of Ni into the Bi, Incontaining SAC solder alloy could improve the shear strength even higher. The current study
provides the guidance for developing novel SAC-based solder alloys with optimized properties.
Keywords: Lead-free solder; SAC; Alloying.
Email: * zqdong@shu.edu.cn

76P34-Microstructure observation of Al-1.0mass%Mg2Ge(0.4mass%Si) alloys aged at 473K
S. Murakata1, T. Tsuchiya2, S. Lee2, S. Ikeno3, and K. Matsuda2, †1Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, 930-8555, Japan
2 Faculty of Sustainable Design, Department of Materials Design and Engineering, University of Toyama , Toyama,

Toyama, 930-8555, Japan
3Professor emeritus, University of Toyama, Toyama, Japan

It is known that a substitution for Si to Ge in Al-Mg-Si alloy can improve its mechanical property by
aging heat treatment at relatively high temperatures. Precipitation sequence in Al-Mg-Ge alloy issuggested S.S.S.S → cluster → G. P. zone → Random type → parallelogram type, β” → β’, A type →β. It is known that the Al-Mg-Ge alloy shows a higher maximum hardness as compared with the Al-MgSi alloy with aging treatment. And the maximum hardness of the Al-Mg-Ge alloy with Si addition also
shows a higher hardness than that of without Si addition. In this study, the effect of Si addition on aging
behavior in Al-Mg-Ge alloys was investigated with hardness measurement and Transmission Electron
Microscope (TEM) observation. The chemical compositions of the alloys are Al-0.40Mg-0.61Ge(mass %) alloy (base alloy) and Al-0.44Mg-0.51Ge-0.40Si (mass %) alloy (Si added alloy). Both alloy
homogenization treatment at 673K for 21.6ks after casting. Both samples with the thickness of 1mm and
0.2 mm were prepared by hot-and cold-rolling, followed by the solution treatment at 873K for 3.6ks andthen quenched into chilled water. Afterwards, they were added at 473K. Vickers microhardness
measurement was conducted by using Mitutoyo HM-101. TEM observation was conducted by using
Topcon, EM-002B with accelerated voltage of 120 kV. There was no difference in hardness values at as.
Q between the two alloys. And, Si added alloy shows a higher maximum hardness as compared with thebase alloy. Furthermore, Si added alloy shows a shorter time to reach maximum hardness than base alloys.
In TEM observation, precipitate cross section and those aspects were observed in both alloys. The
number density of precipitates from precipitate cross section in the Si added alloy at the initial stage andpeak hardness condition was increased compared to base alloy.
Keywords: Al-Mg-Ge, Precipitation, TEM
Email: †ikenolab@sus.u-toyama.ac.jp77P35-Long-range ferromagnetic ordering and novel phasetransitions in macroscopic artificial kagome particle ice
J. J. Zhang3, J. Y. Ge3
1State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan

University, Shanghai 200433, People’s Republic of China
2Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, China
3Materials Genome Institute, Shanghai University, Shanghai 200444, People’s Republic of China
4UVSOR Synchrotron Facility, Institute for Molecular Science, National Institutes of Natural Science, Myodaiji,

Okazaki 444-8585, Japan
5UVSOR Synchrotron Facility, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan

A totally new platform to study particle ice is proposed and realized. Easily manipulate each interaction
unit. Directly see the ice state. Rich ways to manipulate the interaction, such as the magnet diameter,
length et al. Everyone can do such experiment even in you office, at home, which will definitely attract
much interest. For the first time, ferromagnetic ground state is realized experimentally in particle ice
system. With our design, we are even able to reach an ultrastrong interaction region, where the longrange ordered FM state is broken down. For the first time, a new phase transition from FM1 state to FM2state is observed. Such a state was even not predicted by theory.
Keywords: Ferromagnetic ground state, Novel phase, Manipulation
Email: 1693000514@qq.com

78P36-TEM observation of Mg-2.2Zn-0.2In alloy aged at 473K
J. Ezura1, T. Tsuchiya2, S. Lee2, S. Ikeno3, and K. Matsuda2, †1Graduate School of Science and Engineering, University of Toyama, Toyama, Toyama, 930-8555, Japan
2 Faculty of Sustainable Design, Department of Materials Design and Engineering, University of Toyama , Toyama,

Toyama, 930-8555, Japan
3Professor emeritus, University of Toyama, Toyama, Japan

Mg-Zn alloys are known as aged-hardened Mg alloy. The aging precipitation sequence is S. S. S. S. →G. P. zone → β₁’(rod-shaped precipitates perpendicular to the {0001}Mg plane), β₂’(coarse plate
precipitates parallel to the {0001}Mg plane) → β and it is considered that the intermediate phase β₁’
mainly contributes to the hardness. However, the age-hardenability of Mg-Zn alloy is relatively low. In
recent years, attempts have been made to further improve the age- hardenability by adding a trace amountof an alloying element to Mg-Zn alloy. When the BOP value was calculated by the Dv-xα method for theselection of candidate additive elements, in showed a relatively high value. However, the age hardening
behavior of Mg-Zn-In alloys has not been clarified.
In this study, the microstructure was observed using a transmission electron microscope with the aim ofclarifying the effect of In addition on the aging hardening behavior of Mg-Zn alloys. This alloy was
prepared by gravity casting. Homogenization was carried out at 603 K for 43.2 ks and the sample was
hot rolled to 1 mm thickness. The solution treatment was performed at 603 K, 3.6 ks in an argon
atmosphere , then quenched into water at 293 K. Aging treatment was conducted at 473K. TEM
specimens were prepared by twin jet electrolytic polishing method using a solution of nitric acid : acetic
acid : ethanol = 1.5 : 1.5 : 7 cooled to 263 K. Microstructure observation was carried out usingtransmission electron microscope (TEM, TOPCON EM-002B) under accelerated voltage of 120kV.
Keywords: TEM, Mg-Zn-In alloy, Precipitation, Aging
Email: †ikenolab@sus.u-toyama.ac.jp79P37-Reveal of free radicals in manganese-based catalysts
and their roles during selective catalytic reduction of
nitrogen oxide
L. M. Hou1, Y. L. Wen2, J. Z. Wu1, Y. Yang1, J. Zhang2*, J. C. Zhang1*, G. R. Qian1
1Materials Genome Institute, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
2SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering,

Shanghai University, No. 381 Nanchen Road, Shanghai 200444, China

Manganese-based catalysts attract extensive attentions in low-temperature selective catalytic reduction(SCR) of nitrogen oxide (NOx). However, seldom work focuses on the existence of free radicals and theirroles in SCR. In this work, experiment and density functional theory are combined to reveal surface
characterizations of manganese oxide and Ce/La-doped manganese oxides. As a result, superoxide
radical (O2*) exists on manganese-oxide surface, produces nitrogen containing free radical, and functions
as electron transfer between NOx and NH3 at 100 °C resulting in good NOx conversion as well as N2
selectivity at the same time. The O2* is born of accepting electrons on adsorbed oxygen throughoverlapped orbits of Mn-d and O-p. Additional metal doping increases the percentage of O2* among all
oxygen species from 2.9 % to 6.9 % (Ce doping) and 5.1 % (La doping). The order of O2* percentage isconsistent with the NOx-conversion order at 100 °C , Ce doping (91.6 %) > La doping (55.7 %) > catalyst
without doping (27.5 %). Above result helps to understand interface behaviors of manganese-based
catalyst in SCR. This work is also in favor of developing more effective low-temperature catalysts.
Keywords: Selective catalytic reduction, Nitrogen oxide, Manganese oxide, Superoxide radical
Email: houlm8@163.com

80P38-Synthesis of micro sized hollow Ceria particles preparedby spray dry pyrolysis
T. Hashizume‡, A. Saiki
Faculty of Sustainable Design, Academic Assembly, University of Toyama, Gofuku3190, Toyama,930-8555, JapanThe morphology of ceria microparticles prepared by a combination of spray drying and pyrolysis
methods using cerium acetate and cerium nitrate hydrate as precursors was observed by scanning electron
microscopy. It was observed that the sprayed nitrate solution was dried in a cyclone vortex flow to shape
the particles, which were then directly subjected to pyrolysis reaction, resulting in oxide particles. The
particles were found to be correlated with spray pressure, precursor solution concentration and particle
size. The obtained particles were 3-16 micrometers in diameter.
Keywords: Spray pyrolysis, Cerium oxide, Micro sized hollow particle, Morphology
Email: ‡ hasizume@sus.u-toyama.ac.jp81P39-Effect of Mo on Pitting Corrosion Resistance ofMartensitic Stainless Steels
D. Nakato1, K. Nagae1, M. Hatakeyama2 and S. Sunada2
1Graduate School of Material Science and Engineering for Education, University of Toyama, Gohuku Toyama,930-8555, JAPAN
2Graduate School Material of Science and Engineering for Research, University of Toyama, 3190 Gohuku Toyama,930-8555, JAPANThe effect of Mo on the pitting corrosion resistance of martensitic stainless steels is investigated in thisstudy. To evaluate pitting corrosion resistance, electrochemical experiments were conducted on samples
with different Mo contents. The pitting potential (Epit) increased with increasing Mo content, and thepitting corrosion resistance improved. The pitting current density (Ipit) was best suppressed at 1.75
mass%Mo, and the protection of the passive film was improved. However, at 2.50 mass%Mo, the highest
Mo content, Ipit increased more than 20 times, and the protective property of the passive film was lost.
The corrosion state was evaluated by observing the sample surface and cross section before and after
corrosion. The δ-ferrite phase was precipitated at 2.50 mass%Mo. Preferential dissolution of thespecimen was observed around the δ-ferrite phase.
Keywords: Corrosion, Stainless steel, Molybdenum
Email: m22c1615@ems.u-toyama.ac.jp82P40-Effect of Cu content on electrochemical activity in MgCu binary alloys prepared by single role rapid solidification
methodY. Yamada1, S. Fukui2, Y. Fukuta2, T. Tsukeda2, T. Aida2, H. Tabata3, H. Kurihara4, M. Suzuki5
1Graduate school of science and engineering education, University of Toyama, Toyama, 930-8555, Japan
2Faculty of Sustainable Design, University of Toyama, Toyama, 930-8555, Japan
3Advanced Technology Laboratory. Chuetu Metal Works Co., Ltd., Toyama, 930-0298, Japan
4N/A, Saitama Industrial Technology Center (SAITEC), Saitama, 333-0844, Japan
5Faculty of Engineering, Toyama Prefectural University, Toyama, 930-0398, Japan

Magnesium rechargeable batteries are expected to be the next-generation rechargeable ones due to theirresource abundance, safe granular precipitation form, and high volumetric energy density compared withlithium-ion batteries. However, the reason why magnesium rechargeable batteries have not yet been put
into practical use is that the overvoltage of the metal anode reaction is large and the reversibility is poor.
Therefore, we are investigating the effects of various additive elements with the aim of developing anodematerials for magnesium rechargeable batteries with better electrochemical activity. On the other hand,in ordinary magnesium alloys, transition metal elements such as Fe, Ni, and Cu are restricted to low
concentrations as impurity elements that degrade corrosion resistance. Kurihara reported that in rolled
Mg-Cu binary alloys, the amount of Mg 2 Cu increases with increasing Cu addition as well as theelectrochemical activity. However, Cu content of 10% or more makes it difficult to be rolled. Therefore,
our joint research team prepared Mg-Cu binary alloys ribbons with Cu contents exceeding 10% by using
a single roll liquid rapid solidification method, which does not require a plastic forming process such as
rolling, and investigated the electrochemical activity of each ribbon. The effect of Cu addition onelectrochemical activity was discussed in terms of ribbon soundness, surface properties, crystal structure,and microstructure. Among the fabricated specimens, when the Cu content exceeded 15%, the brittlenessof the ribbons increased and the specimens became unsound. In each alloy system, Mg-1%Cu and Mg5%Cu showed the best discharge and charge reactivity.
Keywords: Magnesium rechargeable battery, Effect of chemical composition, Mg-Cud binary alloys
Email: ymd540812@gmail.com

83P41-High-throughout synthesis of La1-xSrxTiO3 thin film andits characterizations
Y. Z. Wang1, J. Han1, H. F. Zhang1, R. H. Ma1, F. Chen1*
1Materials Genome Institute, Shanghai University, Shanghai 200444, China

As the typical perovskite materials, LaTiO3 is a Mott insulator and SrTiO3 is a band insulator. The crystal
structure of La1-xSrxTiO3 exhibits orthorhombic Pbnm to orthorhombic Ibmm transition at x = 0.3 andthen turns to the cubic Pm3m structure at x = 0.8. La1-xSrxTiO3 film undergoes a superconducting
transition at a critical temperature Tc ≈ 300 mK. Here we have synthesized all components of La1-xSrxTiO3
thin film with high-throughout method. La1-xSrxTiO3 thin film has been grown on the (00l) Si substrates
by pulsed laser deposition, using the SrTiO3 and LaTiO3 polycrystalline targets. The optimal processparameters for growing continuous component La1-xSrxTiO3 thin film are determined. The component
gradients of La and Sr are achieved by shifting the mask plate located between the substrate and thetarget. The X-ray diffraction and energy dispersive spectrum results showed that La1-xSrxTiO3 film was
successfully obtained. The electric transport properties of La1-xSrxTiO3 were investigated using physicalproperty measurement system.
Keywords: La1-xSrxTiO3 film, Pulsed laser deposition, Perovskite, High-throughout
Email: *chf001@t.shu.edu.cn

84P42-Effect of microstructure on hardness of Mg-Sc-Zr alloys
with α + β dual phase
H. Minami1, T. Yamaguchi2, T. Tsukeda2, T. Aida2, and H. Tabata3
1University of Toyama, Graduate School of Science and Engineering, Toyama, 930-8555, Japan
2University of Toyama, Faculty of Sustainable Design, Toyama, 930-8555, Japan
3Chuetsu Metal Works Co., Ltd., Advanced Technology Laboratory, Toyama, 930-0298, Japan

Magnesium has an hcp structure, however the addition of Li or Sc results in a composition range where
the bcc structure is mixed. In particular, Mg-Sc alloys can be heat-treated to a single-phase bcc (β-phase)or hcp (α-phase) + bcc duplex structure to achieve high strength. It was also found to exhibit shapememory and superelasticity effects, which had not been reported among Mg alloys. However, Sc iscurrently expensive, and there are still few studies investigating the effects of adding a third element to
Mg-Sc alloys or studies in which ductility was significantly improved.
In this study, we investigated the manufacturing process and addition of third element alloys with theaim of reducing manufacturing costs and improving mechanical properties for the practical use of MgSc alloys. In the manufacturing process, the single-roll rapid solidification method was selected to reduce
costs and the number of processing steps such as rolling. Balk material was also prepared to confirm
whether the strength of the ribbons produced by the single roll rapid solidification method was sufficient.
Zr was added as the third element in anticipation of microstructural refinement. If Zr can be added to
Mg-Sc alloys without compromising their material properties, it is expected that the amount of Sc added
to Mg alloy can be reduced.
Mg-20at%Sc alloy and Mg-10.3at%Zr alloy were used as master alloys for the fabrication of ribbon andbalk materials, and weighed to obtain the target compositions. The target compositions were Mg20at%Sc, Mg-19.6at%Sc-0.2at%Zr, and Mg-19.2at%Sc-0.4at%Zr, which are expected to undergo β
single-phase treatment after Mg-Sc-Zr state diagram was created by Thermo-Calc.
The liquid rapid solidification equipment was fabricated by using an oxygen-free copper cooling roll
without cooling water, inserting the weighed mother alloy into a crucible with a nozzle made of SUS430,
melting it by induction heating, and injecting it with Ar gas onto a high-speed rotating roll. The
production conditions were Ar atmosphere, injection pressure of 0.05 MPa, distance between nozzle andcooling roll 1.6 mm, and peripheral speed of cooling roll 30 m/s. Balk material was prepared by induction
heating in a quartz glass crucible. Hardness was selected as a mechanical property, and Knoop hardness
with shallow indentation was used to measure the hardness of ribbon, and Vickers hardness was used tomeasure the hardness of balk material, respectively. The effect of microstructure on hardness was also
investigated. The surface microstructure of the ribbon was observed using FE-SEM. The cell size wascalculated by the quadrature method using a microstructure photograph of the free-solidification surfaceof each ribbon. After each ribbon was embedded with room temperature hardening resin, microstructuralobservation of the cross-section was performed by low-vacuum SEM, and elemental analysis was85performed by EDS. Microstructural observations of balk material were made by low-vacuum SEM and
FE-SEM. The crystalline phases were identified by XRD, and the peak intensities of the (110) diffraction
peak for the bcc phase and the (10-11) diffraction peak for the hcp phase (bcc/hcp) were compared bysubtracting the background values. Heat treatment was also performed to clarify the effect of Zr additionon the phase transformation behavior of the Mg-Sc alloy.
Keywords: Mg-Sc-Zr alloy, Hcp + bcc duplex structure, Microstructure, Hardness
Email: tubbc.32516.srconn@gmail.com

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