cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2220117
title: Chalibration of the standard samples of the VSANS instrument of CSNS

description: Small-angle neutron scattering (SANS) instrument is a powerful tool for the characterization of structure in materials ranging from 1 nanometer to hundreds of nanometers. A new SANS instrument at China Spallation Neutron Source (CSNS) called VSANS is going to be completed at the end of 2022 and joins the SANS community to serve the global scientific community. Before carrying out any experiments, it must be calibrated with a reliable existing SANS instrument like the well-known benchmark instrument SANS2D. Well-known standard samples like polystyrene/deuterated polystyrene (PS/d-PS), glassy carbon, silver behenate et al. have been prepared. All these samples will be first measured at SANS2D and then at the CSNS-VSANS for the absolute intensity and resolution calibration of the newly built instrument.
DOI: 10.5286/isis.e.rb2220117-1
title: Chalibration of the standard samples of the VSANS instrument of CSNS

description: Small-angle neutron scattering (SANS) instrument is a powerful tool for the characterization of structure in materials ranging from 1 nanometer to hundreds of nanometers. A new SANS instrument at China Spallation Neutron Source (CSNS) called VSANS is going to be completed at the end of 2022 and joins the SANS community to serve the global scientific community. Before carrying out any experiments, it must be calibrated with a reliable existing SANS instrument like the well-known benchmark instrument SANS2D. Well-known standard samples like polystyrene/deuterated polystyrene (PS/d-PS), glassy carbon, silver behenate et al. have been prepared. All these samples will be first measured at SANS2D and then at the CSNS-VSANS for the absolute intensity and resolution calibration of the newly built instrument.
DOI: 10.3535/2mk-l9k-qft
title: Crataegus monogyna Jacq.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/7ya-n4x-8nl
title: Filago arvensis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2210327-2
title: Formation of tin-carbon composites from carbonized biowaste with in-situ neutron study

description: Carbonized waste presents a promising route to produce energy materials in a low carbon with precursor material plant material. Hydrothermal carbon (HTC) can be further modified to produce battery anodes, water purification filters, supercapacitors, fuel cells and catalyst supports.In this work, We propose to combine the previous work about carbon to buffer the volume change of Sn. Our current project for Sn-carbon composite in two different methods: 1) HTC followed by heat treatment to high temperature, 2) direct heat treatment in a pressure vessel. Those two methods show large differences in electrochemical performance. To understand the structural differences the samples have when the two methods are applied – in particular, how the number of graphitic domains, their structure, and the tin structures present in the sample – we request in-situ SANS beamtime.
DOI: 10.5286/isis.e.rb2220353
title: Magnetic structure of Mn2GaC thin film by neutron diffraction

description: Mn2GaC shows interesting magnetic behavior which can potentially be used for spintronic applications. In order to understand its complex magnetic behavior, we need to solve the magnetic structure. The material is grown epitaxially on a single crystal MgO substrate. It orders below 507 K and shows another magnetic transition at 220 K. We determined the propagation vector to be k=(0,0, theta), with theta=~0.55 at 2K and theta1=0.55 and theta2=0.66 at around 300 K from previous D10 and Superadam experiments. In order to describe the magnetic structures we must determine the phases of all four Mn spins in the unit cell, which requires a larger set of magnetic Bragg reflections than currently measured, including both on- and off-axis peaks. The high-flux instrument WISH is well suited for this as it could access a wide range of magnetic reflections.
DOI: 10.5286/isis.e.rb2220353-1
title: Magnetic structure of Mn2GaC thin film by neutron diffraction

description: Mn2GaC shows interesting magnetic behavior which can potentially be used for spintronic applications. In order to understand its complex magnetic behavior, we need to solve the magnetic structure. The material is grown epitaxially on a single crystal MgO substrate. It orders below 507 K and shows another magnetic transition at 220 K. We determined the propagation vector to be k=(0,0, theta), with theta=~0.55 at 2K and theta1=0.55 and theta2=0.66 at around 300 K from previous D10 and Superadam experiments. In order to describe the magnetic structures we must determine the phases of all four Mn spins in the unit cell, which requires a larger set of magnetic Bragg reflections than currently measured, including both on- and off-axis peaks. The high-flux instrument WISH is well suited for this as it could access a wide range of magnetic reflections.
DOI: 10.21233/n3rn59
title: Yathkyed Lake Site 4 pollen surface sample dataset

description: Raw data for the Yathkyed Lake Site 4 pollen surface sample dataset submitted to the Neotoma Paleoecology Database. Data is available through the landing page in JSON format. The landing page referenced by the DOI also contains links to publications and a map-based viewer for the dataset. The Neotoma Paleoecology Database maintains a homepage at https://www.neotomadb.org.
DOI: 10.3535/5rq-yq2-00t
title: Rumex aquaticus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/zzv-mvx-3bk
title: Crepis syriaca (Bornm.) Babc. & Navashin

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220053
title: Critical spin fluctuations in the heavy-fermion antiferromagnets Ce2Bi and Ce2Sb

description: The compounds Ce2Bi and Ce2Sb represent rare examples of the heavy fermion materials that exhibit the coexistence of an antiferromagnetic magnetic order and a tricritical point (TCP) in their temperature-magnetic field phase diagram. The magnetic and resistivity measurements of Ce2Sb and Ce2Bi showed that both materials exhibit AFM ground states. Moreover, the measurements revealed metamagnetic transitions which show a crossover from a second-order transition at elevated temperatures, to first order behavior, which indicates the presence of TCPs in the phase diagrams of these materials. We intend to study the magnetic fluctuations in these two materials in the vicinity of the tricritical point by means of low-energy TOF spectroscopy. We will demonstrate that Ce2Sb hosts stronger spin fluctuations than Ce2Bi, as it has a larger unit cell volume and is closer to a quantum TCP.
DOI: 10.5286/isis.e.rb2220053-1
title: Critical spin fluctuations in the heavy-fermion antiferromagnets Ce2Bi and Ce2Sb

description: The compounds Ce2Bi and Ce2Sb represent rare examples of the heavy fermion materials that exhibit the coexistence of an antiferromagnetic magnetic order and a tricritical point (TCP) in their temperature-magnetic field phase diagram. The magnetic and resistivity measurements of Ce2Sb and Ce2Bi showed that both materials exhibit AFM ground states. Moreover, the measurements revealed metamagnetic transitions which show a crossover from a second-order transition at elevated temperatures, to first order behavior, which indicates the presence of TCPs in the phase diagrams of these materials. We intend to study the magnetic fluctuations in these two materials in the vicinity of the tricritical point by means of low-energy TOF spectroscopy. We will demonstrate that Ce2Sb hosts stronger spin fluctuations than Ce2Bi, as it has a larger unit cell volume and is closer to a quantum TCP.
DOI: 10.5286/isis.e.rb2269001-2
title: Investigation of the magnetic correlations of MnSi in 3D

description: The recent discovery of skyrmions and skyrmion lattices in materials with no inversion symmetry and their corresponding potential applications of Skyrmions in magnetic information storage and processing devices has increased the scientific interest in these chiral materials. The archetype chiral system is MnSi, on which various studies have been performed. Recent findings point out to new mechanisms for stabilising new chiral magnetic phases and skyrmion correlations at low temperatures. In order to test the validity of these predictions we propose to map the magnetic correlations of MnSi in 3D by using the unique capabilities of the 3D magnetic field cryomagnet of ISIS.
DOI: 10.3535/66v-d8q-tpm
title: Poa nemoralis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2210068-2
title: Evolution of the interface magnetism in bi-magnetic core/shell nanoparticles (Fe3O4/Mn3O4) with antiferromagnetic interface coupling

description: Bi-magnetic core/shell nanoparticles with an antiferromagnetic interface present very interesting properties. At high fields the antiferromagnetic coupling is overcome and the shell magnetization rotates so that the core and the shell align ferromagnetically. Simulations show that this induces an inhomogeneous magnetization at the interface. Here we propose to carry out a half-polarized SANS study of Fe3O4/Mn3O4 core/shell nanoparticles with antiferromagnetic interface coupling at different fields. (0-3 T) at 100 K and 10 K [TC(Mn3O4)=45 K]. The results will allow us to study the evolution of the spin arrangement of the core, shell and interface as the magnetization of the shell rotates for increasing fields. These results will allow us to understand the microscopic effects of the antiferromagnetic interface coupling in core/shell nanoparticles.
DOI: 10.5286/isis.e.rb2220062
title: Enhanced magnon transport through an amorphous magnetic insulator

description: Magnonics research is focused on the transport of spin information via spin-wave, or magnon, excitations. Due to its exceptionally low damping, the magnetic insulator Yttrium Iron Garnet (YIG) is considered the most prominent material in this field. New research has been stimulated by a report of long (µm) magnon diffusion lengths in amorphous YIG (a-YIG) where there is no long range magnetic order. Similar experiments have failed to reproduce the results and spin-pumping data provides a much lower (3.6nm) spin diffusion length. We have recently measured a 28nm spin diffusion length in a-YIG (28nm) and hypothesise that samples of a-YIG may differ depending on growth conditions. In this proposal we will use polarized neutron reflectometry to investigate a-YIG in order to see if deviations away from the expected M = 0 emu/cc can explain the longer spin diffusion length in our samples.
DOI: 10.5286/isis.e.rb2220062-1
title: Enhanced magnon transport through an amorphous magnetic insulator

description: Magnonics research is focused on the transport of spin information via spin-wave, or magnon, excitations. Due to its exceptionally low damping, the magnetic insulator Yttrium Iron Garnet (YIG) is considered the most prominent material in this field. New research has been stimulated by a report of long (µm) magnon diffusion lengths in amorphous YIG (a-YIG) where there is no long range magnetic order. Similar experiments have failed to reproduce the results and spin-pumping data provides a much lower (3.6nm) spin diffusion length. We have recently measured a 28nm spin diffusion length in a-YIG (28nm) and hypothesise that samples of a-YIG may differ depending on growth conditions. In this proposal we will use polarized neutron reflectometry to investigate a-YIG in order to see if deviations away from the expected M = 0 emu/cc can explain the longer spin diffusion length in our samples.
DOI: 10.3535/422-he2-ch3
title: Heliosperma pusillum subsp. pusillum

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/mxy-e38-aev
title: Dactylis glomerata subsp. lobata (Drejer) H.Lindb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220504
title: Structural characterisation of Ca2+-containing complexes of humic acid (HA) and cationic polyelectrolyte

description: Humic acid (HA) exists ubiquitously in aquatic environments and does affect the water quality of drinking water. For its removal complexation with polycations is an essential step. In our experiment we will investigate PDADMAC and Quaternized Chitosan as polycations to characterise the structure of complexes formed with HA. We will focus on the effect of Ca2+, which enhances aggregation of HA complexes. Shape and size of the formed aggregates, especially their compactness and local structure will be determined by SANS as a function of mixing ratio, type of polycation, and Ca2+ concentration. This will lead to a detailed understanding of how the structure of HA complexes is affected by Ca2+ and polycation, respectively. This is fundamentally important for an improved understanding of this step in water treatment and allow for systematic improvements of HA removal in water industry.
DOI: 10.5286/isis.e.rb2220504-1
title: Structural characterisation of Ca2+-containing complexes of humic acid (HA) and cationic polyelectrolyte

description: Humic acid (HA) exists ubiquitously in aquatic environments and does affect the water quality of drinking water. For its removal complexation with polycations is an essential step. In our experiment we will investigate PDADMAC and Quaternized Chitosan as polycations to characterise the structure of complexes formed with HA. We will focus on the effect of Ca2+, which enhances aggregation of HA complexes. Shape and size of the formed aggregates, especially their compactness and local structure will be determined by SANS as a function of mixing ratio, type of polycation, and Ca2+ concentration. This will lead to a detailed understanding of how the structure of HA complexes is affected by Ca2+ and polycation, respectively. This is fundamentally important for an improved understanding of this step in water treatment and allow for systematic improvements of HA removal in water industry.
DOI: 10.3535/4zx-2sq-pwg
title: Matthiola longipetala (Vent.) DC.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/jrc-v1f-dll
title: Centaurea pannonica (Heuff.) Simonk.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2190164
title: Droplets for BNCT
DOI: 10.5286/isis.e.rb2190164-1
title: Droplets for BNCT
DOI: 10.5286/isis.e.rb2190172-1
title: Imaging of Samples from US Visiting Student
DOI: 10.3535/8bn-83h-5wa
title: Bromus japonicus subsp. japonicus

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/b6f-n50-vx2
title: Bromus arvensis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2190172
title: Imaging of Samples from US Visiting Student
DOI: 10.5286/isis.e.rb2220055-1
title: Identification of the phase II and II' propagation vectors in Ce3Pd20Ge6

description: At zero magnetic field the Ce3Pd20Ge6 heavy-fermion compound exhibits two magnetically ordered phases II and III. Powder neutron diffraction identified the phase III as an AFM phase. The ferroquadrupolar (FQ) phase II was suggested by means of sound velocity measurements. Because neutrons do not couple to the quadrupolar moments, the FQ phase transition was not identified in previous measurements at zero field. External magnetic field induces dipolar and octupolar moments, which can be probed with neutrons. In the case of Ce3Pd20Ge6 identification of the propagation vector of the FQ phase is hindered by the fact that the possible elastic magnetic signal overlaps with the position of the structural Bragg peaks. In this proposal we would like to measure the magnetic field dependence of the observed collective modes in Ce3Pd20Ge6, to understand the nature of the phase II -&gt;II' transition
DOI: 10.3535/3bc-bre-vfe
title: Erigeron annuus (L.) Pers.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220055
title: Identification of the phase II and II' propagation vectors in Ce3Pd20Ge6

description: At zero magnetic field the Ce3Pd20Ge6 heavy-fermion compound exhibits two magnetically ordered phases II and III. Powder neutron diffraction identified the phase III as an AFM phase. The ferroquadrupolar (FQ) phase II was suggested by means of sound velocity measurements. Because neutrons do not couple to the quadrupolar moments, the FQ phase transition was not identified in previous measurements at zero field. External magnetic field induces dipolar and octupolar moments, which can be probed with neutrons. In the case of Ce3Pd20Ge6 identification of the propagation vector of the FQ phase is hindered by the fact that the possible elastic magnetic signal overlaps with the position of the structural Bragg peaks. In this proposal we would like to measure the magnetic field dependence of the observed collective modes in Ce3Pd20Ge6, to understand the nature of the phase II -&gt;II' transition
DOI: 10.5286/isis.e.rb2220644
title: Probing the Magnetic Ground State in the Quantum Spin Liquid Candidate Ce2Hf2O7

description: Magnetic materials displaying quantum spin liquid (QSL) ground states are of great topical interest due to the exotic nature of their excitations and emergent properties at low temperatures. Recent work has provided strong evidence for a QSL ground state in Ce2Zr2O7 and identifies this as a novel QSL phase near the boundary between “dipolar” and “octupolar” nature. Additionally, measurements on Ce2Sn2O7 were interpreted in terms of a QSL within the octupolar sector. Here we are proposing an experiment that will allow us to probe the low temperature magnetic diffuse scattering from new powder samples of Ce2Hf2O7, a sister pyrochlore to the QSL candidates Ce2Zr2O7 and Ce2Sn2O7. Neutron scattering experiments such as the one proposed here were crucial in furthering the understanding of the magnetic ground states in Ce2Zr2O7 and Ce2Sn2O7 and we expect the same to be the case for Ce2Hf2O7.
DOI: 10.5286/isis.e.rb2220644-1
title: Probing the Magnetic Ground State in the Quantum Spin Liquid Candidate Ce2Hf2O7

description: Magnetic materials displaying quantum spin liquid (QSL) ground states are of great topical interest due to the exotic nature of their excitations and emergent properties at low temperatures. Recent work has provided strong evidence for a QSL ground state in Ce2Zr2O7 and identifies this as a novel QSL phase near the boundary between “dipolar” and “octupolar” nature. Additionally, measurements on Ce2Sn2O7 were interpreted in terms of a QSL within the octupolar sector. Here we are proposing an experiment that will allow us to probe the low temperature magnetic diffuse scattering from new powder samples of Ce2Hf2O7, a sister pyrochlore to the QSL candidates Ce2Zr2O7 and Ce2Sn2O7. Neutron scattering experiments such as the one proposed here were crucial in furthering the understanding of the magnetic ground states in Ce2Zr2O7 and Ce2Sn2O7 and we expect the same to be the case for Ce2Hf2O7.
DOI: 10.3535/nd2-4rv-ads
title: Aglaia oligophylla Miq.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/p0p-lwx-zyt
title: Agrimonia eupatoria subsp. eupatoria

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220037
title: Thermoresponsive supracolloidal organic/inorganic materials

description: Thermothickening materials that harden when warmed, for example by the body, have application in therapeutics, tissue engineering and emerging fields such as soft robotics. We have recently demonstrated that clay/branched copolymer surfactants (BCSs) complexes undergo thermothickening while preventing clay gelation, this responsive behaviour allows finecontrol of the clay/polymer gelation. Clays can act as carriers for active ingredients or site for cell adhesion, if not blocked by the BCS. The objectives of this work are to probe how BCS/clay interacts tor form gels and its possible impact on bioapplicability of the clay nanoparticles. This data will be coupled to existing rheology data to inform rational design of high-performance thermothickening clay/polymer composites.
DOI: 10.5286/isis.e.rb2220037-1
title: Thermoresponsive supracolloidal organic/inorganic materials

description: Thermothickening materials that harden when warmed, for example by the body, have application in therapeutics, tissue engineering and emerging fields such as soft robotics. We have recently demonstrated that clay/branched copolymer surfactants (BCSs) complexes undergo thermothickening while preventing clay gelation, this responsive behaviour allows finecontrol of the clay/polymer gelation. Clays can act as carriers for active ingredients or site for cell adhesion, if not blocked by the BCS. The objectives of this work are to probe how BCS/clay interacts tor form gels and its possible impact on bioapplicability of the clay nanoparticles. This data will be coupled to existing rheology data to inform rational design of high-performance thermothickening clay/polymer composites.
DOI: 10.5286/isis.e.rb2220553-1
title: Complex magnetic ordering in the topological kagome metals RMn6Sn6 (continued)

description: Recent theoretical predictions and experimental realisations of exotic fermions and topologically protected phases in condensed matter have led to tremendous research interests in topological quantum materials. Recently, the correlated topological metals RMn6Sn6 have emerged as an exciting platform to explore the interplay between geometric frustration, non-trivial band topology and magnetism. We have carried out the first single-crystal neutron diffraction study of ErMn6Sn6 at WISH in early April 2022. However, due to limited beamtime in our previous experiment, we could not complete all originally proposed studies. Therefore, we would like to propose to carry out a continued study of complex magnetic ordering in ErMn6Sn6, including the magnetic field dependence measurement with H//c and the zero-field crystallographic study. We would request 3 days of measurement time at WISH.
DOI: 10.3535/fs4-n43-ekt
title: Aglaia Lour.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220089
title: Lateral roughness correlations in 11B4C incorporated Fe/Si polarizing neutron mirrors

description: The incorporation of 11B4C in multilayer thin films has been shown to significantly decrease the roughness between layers in our studies. This effect is now being applied and studied in neutron optics. The most common polarizing neutron mirror material system today is Fe/Si. Decreasing the interface roughness between the layers can be done by incorporating small amounts of 11B4C in all layers. With this proposal we aim to study the lateral magnetic roughness of Fe/Si+11B4C multilayer systems in comparison to Fe/Si without incorporated 11B4C. We expect the 11B4C to reduce the lateral roughness and magnetic correlations, and therefore plan for such long counting times, to carefully observe any differences between Fe/Si with and without incorporated 11B4C.