cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb1920194-2
title: Multiple Coulomb phase in CsNiCrF6

description: The compound CsNiCrF6 hosts multiple Coulomb phases. A Coulomb phase is a material in which a relationship can be identified between some part of the material's structure and a field in which all the lines make closed loops (i.e. it is non-divergent). Magnetic Coulomb phases, in which the arrangements of magnetic moments are described by a non-divergent field are known, e.g. spin ice, but structural Coulomb phases are also possible. CsNiCrF6 is proposed to host Coulomb phase correlations in two elements of its crystal structure and in its magnetic moments. Here we propose to use SXD to measure Bragg and diffuse scattering that can be used to better control our modelling of the structural Coulomb phases, essential to understand the microscopic interactions that produce the magnetic Coulomb phase, and thermodynamic properties such as anomalous glass-like thermal conductivity.
DOI: 10.5286/isis.e.rb1920509
title: In-situ investigation into the hydrogen sorption pathways of High Entropy Alloy based metal hydrides.

description: Anthropogenic global warming is largely accepted by society and the need for alternative and renewable fuels is desired. One such alternative fuel is hydrogen, considered to be a renewable and sustainable solution to reducing our reliance on fossil fuels. However, the safe and efficient storage of hydrogen still remains a challenge. High entropy alloy (HEA) based metal hydrides are a class of material that offer a viable way to safely and efficiently store hydrogen. Previous work demonstrated HEAs to have a relatively high capacity and cyclability as a hydrogen storage medium. This proposal seeks to study the storage capacity and cyclability of select candidates by tuning the metal composition to change the properties of the material. With the use of in situ neutron diffraction-TGA the property-structure relationship can be understood to better tune to the ideal metal composition.
DOI: 10.5286/isis.e.rb1920509-1
title: In-situ investigation into the hydrogen sorption pathways of High Entropy Alloy based metal hydrides.

description: Anthropogenic global warming is largely accepted by society and the need for alternative and renewable fuels is desired. One such alternative fuel is hydrogen, considered to be a renewable and sustainable solution to reducing our reliance on fossil fuels. However, the safe and efficient storage of hydrogen still remains a challenge. High entropy alloy (HEA) based metal hydrides are a class of material that offer a viable way to safely and efficiently store hydrogen. Previous work demonstrated HEAs to have a relatively high capacity and cyclability as a hydrogen storage medium. This proposal seeks to study the storage capacity and cyclability of select candidates by tuning the metal composition to change the properties of the material. With the use of in situ neutron diffraction-TGA the property-structure relationship can be understood to better tune to the ideal metal composition.
DOI: 10.5286/isis.e.rb1920513-2
title: Strain mapping of laser welded EUROFER97 using Bragg edge neutron imaging

description: Eurofer97 is the main structural material targeted for the in-vessel components of demonstration (DEMO) fusion reactors. To facilitate Remote Maintenance (RM) of a demonstration fusion plant, the RM teams at Culham Centre for Fusion Energy (CCFE) propose to utilise lasers to join and cut in-vessel components. Understanding the residual stress inherited from the rapid welding process, and how this stress evolves at elevated temperature, are both essential information to avoiding actastropic failure of key components in DEMO fusion reactors. The current proposed study aims to characterise the residual stress in as-welded and post heat treated Eurofer97 steels using Bragg edge neutron imaging technique for improving the structural integrity assessment of welded components. This project is funded by Surrey Doctoral College Studentship in collaboration with CCFE.
DOI: 10.5286/isis.e.rb1920724
title: Investigating the superconducting and magnetic properties of two new superconducting ternary osmium silicides: NbOsSi and TaOsSi

description: Recently, Eckert and co-authors synthesised osmium based two superconductors, NbOsSi and TaOsSi, and found that these compounds exhibit superconductivity below a transition temperature of 3.5K and 5.5K, respectively. We have performed a quick Xpress muSR measurements and found time-reversal symmetry breaking fields in TaOsSi. We now propose to study the magnetic and superconducting properties of NbOsSi and TaOsSi, by a combination of zero-field and transverse-field muSR measurements. We plan to investigate how the symmetry of the superconducting gap structures varies between the Ta- and Nb-compound and confirm if spontaneous TRS breaking fields arises in the superconducting state of both materials and hence establish these superconductors as a new family of TRS breaking superconductors.
DOI: 10.5286/isis.e.rb1920447
title: Proton dynamics of graphenes of different hydrogen content

description: Graphene is defined as a: single layer of carbon atoms with each atom bound to three neighbours in a honeycomb structure. This suggests that in a macroscopic, manageable sample quantity ideally 2D nano-objects are present consisting of single-layer sheets of sp2 carbon. In reality, different educts/raw materials of varying purity and morphology in the manufacture of graphene sheets, the efficiency of the exfoliation procedures and the post-oxidation/functionalization techniques all influence the properties. Especially the terminating protons (C-H) at the edges of the sheets or inside the 2D geometry in point or line defects are of great interest. Inelastic incoherent neutron scattering (IINS) is uniquely able to study the basic structural units of carbons. Here, we propose a parametric study on 2D-materials with moderately, to extremely, different structural properties.
DOI: 10.5286/isis.e.rb1920447-1
title: Proton dynamics of graphenes of different hydrogen content

description: Graphene is defined as a: single layer of carbon atoms with each atom bound to three neighbours in a honeycomb structure. This suggests that in a macroscopic, manageable sample quantity ideally 2D nano-objects are present consisting of single-layer sheets of sp2 carbon. In reality, different educts/raw materials of varying purity and morphology in the manufacture of graphene sheets, the efficiency of the exfoliation procedures and the post-oxidation/functionalization techniques all influence the properties. Especially the terminating protons (C-H) at the edges of the sheets or inside the 2D geometry in point or line defects are of great interest. Inelastic incoherent neutron scattering (IINS) is uniquely able to study the basic structural units of carbons. Here, we propose a parametric study on 2D-materials with moderately, to extremely, different structural properties.
DOI: 10.5286/isis.e.rb1920600
title: Time of Flight MISANS

description: MISANS is the combination of Modulation of Intensity Emerging from Zero Effort (MIEZE) and Small Angle Neutron Scattering (SANS). SANS is used to determine the microscopic structure of a sample, while MIEZE is used to determine microscopic dynamics of a sample. The microscopic structure is encoded in the scattering angle of the neutrons, while the dynamics are encoded in the neutron polarization. Since MISANS is a combination of these two methods it can simultaneously measure structure and dynamics. Using this method we aim to measure the self diffusion of water
DOI: 10.5286/isis.e.rb1920600-1
title: Time of Flight MISANS

description: MISANS is the combination of Modulation of Intensity Emerging from Zero Effort (MIEZE) and Small Angle Neutron Scattering (SANS). SANS is used to determine the microscopic structure of a sample, while MIEZE is used to determine microscopic dynamics of a sample. The microscopic structure is encoded in the scattering angle of the neutrons, while the dynamics are encoded in the neutron polarization. Since MISANS is a combination of these two methods it can simultaneously measure structure and dynamics. Using this method we aim to measure the self diffusion of water
DOI: 10.5286/isis.e.rb1920724-3
title: Investigating the superconducting and magnetic properties of two new superconducting ternary osmium silicides: NbOsSi and TaOsSi

description: Recently, Eckert and co-authors synthesised osmium based two superconductors, NbOsSi and TaOsSi, and found that these compounds exhibit superconductivity below a transition temperature of 3.5K and 5.5K, respectively. We have performed a quick Xpress muSR measurements and found time-reversal symmetry breaking fields in TaOsSi. We now propose to study the magnetic and superconducting properties of NbOsSi and TaOsSi, by a combination of zero-field and transverse-field muSR measurements. We plan to investigate how the symmetry of the superconducting gap structures varies between the Ta- and Nb-compound and confirm if spontaneous TRS breaking fields arises in the superconducting state of both materials and hence establish these superconductors as a new family of TRS breaking superconductors.
DOI: 10.5286/isis.e.rb1970119
title: mSR study of antiferromagnetic fluctuations in the hole-doped superconductor T-La1.8-xEu0.2SrxCuO4

description: The purpose of this mSR study is to investigate antiferromagnetic (AF) fluctuations in the hole-doped high-Tc cuprate La1.8-xEu0.2SrxCuO4 with the Nd2CuO4-type (so-called T'-type) structure. In the undoped (Ce-free) superconductor T'-Ln2CuO4 (Ln: lanthanide elements), the superconductivity emerges even in the undoped mother compound. Recently, since we have successfully synthesized the electron-doped T'-La1.8Eu0.2CuO4-yFy samples, the hole- and electron-concentration dependence of critical temperature, Tc, for T'-La1.8-xEu0.2SrxCuO4-yFy has been revealed. From our resent mSR measurements of electron-doped T'-La1.8Eu0.2CuO4-yFy, it is found that AF fluctuations disappears at y &gt; 0.10. Therefore, AF fluctuations in hole-doped region would be clarified, leading to the understanding of the relation between the superconductivity and antiferromagnetism in undoped superconductors.
DOI: 10.5286/isis.e.rb1970119-1
title: mSR study of antiferromagnetic fluctuations in the hole-doped superconductor T-La1.8-xEu0.2SrxCuO4

description: The purpose of this mSR study is to investigate antiferromagnetic (AF) fluctuations in the hole-doped high-Tc cuprate La1.8-xEu0.2SrxCuO4 with the Nd2CuO4-type (so-called T'-type) structure. In the undoped (Ce-free) superconductor T'-Ln2CuO4 (Ln: lanthanide elements), the superconductivity emerges even in the undoped mother compound. Recently, since we have successfully synthesized the electron-doped T'-La1.8Eu0.2CuO4-yFy samples, the hole- and electron-concentration dependence of critical temperature, Tc, for T'-La1.8-xEu0.2SrxCuO4-yFy has been revealed. From our resent mSR measurements of electron-doped T'-La1.8Eu0.2CuO4-yFy, it is found that AF fluctuations disappears at y &gt; 0.10. Therefore, AF fluctuations in hole-doped region would be clarified, leading to the understanding of the relation between the superconductivity and antiferromagnetism in undoped superconductors.
DOI: 10.5286/isis.e.rb1920114
title: Pressure effect on high-temperature multiferroic CuO studied by a single crystal experiment

description: We propose to perform neutron diffraction experiment under high pressure condition, using a single crystal of CuO on WISH beamline. This monoxide is known as a multiferroic compound with high Tc (~ 230 K). Some theoretical and experimental studies suggest that pressure significantly affects the phase transition, bringing Tc above room temperature. However, there remains inconsistencies among the different theoretical studies and the experimental results. In this work, we would like to investigate how the ferroelectric phase transition temperature changes with pressure by using a single crystal of CuO in the experimentally accessible pressure range up to 10 GPa.
DOI: 10.5286/isis.e.rb1920114-1
title: Pressure effect on high-temperature multiferroic CuO studied by a single crystal experiment

description: We propose to perform neutron diffraction experiment under high pressure condition, using a single crystal of CuO on WISH beamline. This monoxide is known as a multiferroic compound with high Tc (~ 230 K). Some theoretical and experimental studies suggest that pressure significantly affects the phase transition, bringing Tc above room temperature. However, there remains inconsistencies among the different theoretical studies and the experimental results. In this work, we would like to investigate how the ferroelectric phase transition temperature changes with pressure by using a single crystal of CuO in the experimentally accessible pressure range up to 10 GPa.
DOI: 10.5286/isis.e.rb1920177
title: Reconstitution of human dihydroorotate dehydrogenase into lipid-detergent micelles

description: Human dihydroorotate dehydrogenase (DHODH) is an integral membrane protein found in mitochondria involved in the biosynthesis of pyrimidines. DHODH oxidizes dihydroorotate with the simultaneous reduction of ubiquinone Q10 and is a well-validated target for anti-inflammatory and anti-proliferative drugs. We are investigating the mechanisms by which DHODH interacts with Q10 and clinical inhibitors in the inner mitochondrial membrane (IMM) and therefore develop methods to reconstitute it into physiologically relevant membranes. We are reconstituting full-length DHODH into supported lipid bilayers mimicking the IMM from phospholipid-detergent micelles using dodecyl-D-maltoside (DDM) as the surfactant. In this SANS2D experiment, we propose to determine the structure of the lipid-DDM-DHODH micelles in solution using contrast variation.
DOI: 10.5286/isis.e.rb1920724-1
title: Investigating the superconducting and magnetic properties of two new superconducting ternary osmium silicides: NbOsSi and TaOsSi

description: Recently, Eckert and co-authors synthesised osmium based two superconductors, NbOsSi and TaOsSi, and found that these compounds exhibit superconductivity below a transition temperature of 3.5K and 5.5K, respectively. We have performed a quick Xpress muSR measurements and found time-reversal symmetry breaking fields in TaOsSi. We now propose to study the magnetic and superconducting properties of NbOsSi and TaOsSi, by a combination of zero-field and transverse-field muSR measurements. We plan to investigate how the symmetry of the superconducting gap structures varies between the Ta- and Nb-compound and confirm if spontaneous TRS breaking fields arises in the superconducting state of both materials and hence establish these superconductors as a new family of TRS breaking superconductors.
DOI: 10.5286/isis.e.rb1968041
title: Understanding the role of strong coupling in quasi-two-dimensional cage type superconductors BaIr2Ge7, Ba3Ir4Ge16 and Ba3Rh4Ge16

description: Systems that exhibit a high degree of anisotropy have been attracting considerable attention due to unique physical properties. Recently three superconductors (SC), BaIr2Ge7, Ba3Ir4Ge16, and Ba3Rh4Ge16 have reported with transition temperature 3.2 K, 6.1 K, and 6.5 K, respectively. These compounds share unique quasi-two-dimensional networks composed of crown shaped Ge rings that accommodate Ba atoms at the center, referred to as edge-shared crown-shaped BaGe16 polyhedra. The Ba-Ge structural unit is similar to cage structures seen in various clathrates which are example of strong-coupling SC. In these systems the superconducting order parameter is much stronger in the ab plane than in the c-direction, hence indicates quasi-two-dimensional nature. In this proposal, we intend to investigate the TF/ZF musr to explore the superconductivity in the quasi-two-dimensional compounds.
DOI: 10.5286/isis.e.rb1968041-1
title: Understanding the role of strong coupling in quasi-two-dimensional cage type superconductors BaIr2Ge7, Ba3Ir4Ge16 and Ba3Rh4Ge16

description: Systems that exhibit a high degree of anisotropy have been attracting considerable attention due to unique physical properties. Recently three superconductors (SC), BaIr2Ge7, Ba3Ir4Ge16, and Ba3Rh4Ge16 have reported with transition temperature 3.2 K, 6.1 K, and 6.5 K, respectively. These compounds share unique quasi-two-dimensional networks composed of crown shaped Ge rings that accommodate Ba atoms at the center, referred to as edge-shared crown-shaped BaGe16 polyhedra. The Ba-Ge structural unit is similar to cage structures seen in various clathrates which are example of strong-coupling SC. In these systems the superconducting order parameter is much stronger in the ab plane than in the c-direction, hence indicates quasi-two-dimensional nature. In this proposal, we intend to investigate the TF/ZF musr to explore the superconductivity in the quasi-two-dimensional compounds.
DOI: 10.5286/isis.e.rb2000018
title: Neutron-induced Single Event Upsets in SRAMs for Terrestrial Enviroment

description: As the technology node of CMOS electronic devices scales down, they become more and more susceptible to bit upsets caused by single particles impinging on the device, neutrons being part of them. We plan to measure the sensitivity of various synchronous random access memories (SRAM) to neutron generated bit upsets. In particular, we intend to test SRAM based FPGAs. This will provide us an excellent opportunity to compare experimental results to our theoretical models of calculating neutron single event upset (SEU) sensitivity based on heavy ion irradiation data. In addition, we intend to test the SRAM of a novel system on a chip (SoC) designed for ultra low power.
DOI: 10.5286/isis.e.rb2000018-1
title: Neutron-induced Single Event Upsets in SRAMs for Terrestrial Enviroment

description: As the technology node of CMOS electronic devices scales down, they become more and more susceptible to bit upsets caused by single particles impinging on the device, neutrons being part of them. We plan to measure the sensitivity of various synchronous random access memories (SRAM) to neutron generated bit upsets. In particular, we intend to test SRAM based FPGAs. This will provide us an excellent opportunity to compare experimental results to our theoretical models of calculating neutron single event upset (SEU) sensitivity based on heavy ion irradiation data. In addition, we intend to test the SRAM of a novel system on a chip (SoC) designed for ultra low power.
DOI: 10.18112/openneuro.ds002285.v1.0.1
title: FSL open science dev dataset
DOI: 10.5281/zenodo.3542273
title: Surface deformation of the Mw 6.4 and Mw 7.1 Ridgecrest earthquakes measured from subpixel correlation of Copernicus Sentinel-2 optical images

description: Surface deformation of the Mw 6.4 and Mw 7.1 Ridgecrest earthquakes measured from subpixel correlation of Copernicus Sentinel-2 optical images
DOI: 10.5281/zenodo.3542274
title: Surface deformation of the Mw 6.4 and Mw 7.1 Ridgecrest earthquakes measured from subpixel correlation of Copernicus Sentinel-2 optical images

description: Surface deformation of the Mw 6.4 and Mw 7.1 Ridgecrest earthquakes measured from subpixel correlation of Copernicus Sentinel-2 optical images
DOI: 10.5286/isis.e.rb1920177-1
title: Reconstitution of human dihydroorotate dehydrogenase into lipid-detergent micelles

description: Human dihydroorotate dehydrogenase (DHODH) is an integral membrane protein found in mitochondria involved in the biosynthesis of pyrimidines. DHODH oxidizes dihydroorotate with the simultaneous reduction of ubiquinone Q10 and is a well-validated target for anti-inflammatory and anti-proliferative drugs. We are investigating the mechanisms by which DHODH interacts with Q10 and clinical inhibitors in the inner mitochondrial membrane (IMM) and therefore develop methods to reconstitute it into physiologically relevant membranes. We are reconstituting full-length DHODH into supported lipid bilayers mimicking the IMM from phospholipid-detergent micelles using dodecyl-D-maltoside (DDM) as the surfactant. In this SANS2D experiment, we propose to determine the structure of the lipid-DDM-DHODH micelles in solution using contrast variation.
DOI: 10.5286/isis.e.rb1920366
title: Identification of historic wootz steel weapons and weapon-production workshops through the analysis of Indo-Persian blades

description: The analysis of Indo-Persian arms and armour in the Wallace Collection and the identification of those made from wootz crucible steel have been the principal aims of a long-term Wallace Collection Armoury project. The results obtained so far demonstrated that wootz steel is characterized by hypereutectoid steel in which cementite only presents anisotropy at various levels as can be identified by observing the time of flight diffraction peak intensity variation as a function of the scattering angle.We believe that these variations are a consequence of different forging histories and temperatures, and, if so, that would be a mean of identifying different workshops. We propose to analyse, using neutron diffraction, the presence, type and intensity of anisotropy in cementite for a set of known origin wootz steel weapons from the Oriental gallery of the Wallace Collection.
DOI: 10.5286/isis.e.rb1920366-1
title: Identification of historic wootz steel weapons and weapon-production workshops through the analysis of Indo-Persian blades

description: The analysis of Indo-Persian arms and armour in the Wallace Collection and the identification of those made from wootz crucible steel have been the principal aims of a long-term Wallace Collection Armoury project. The results obtained so far demonstrated that wootz steel is characterized by hypereutectoid steel in which cementite only presents anisotropy at various levels as can be identified by observing the time of flight diffraction peak intensity variation as a function of the scattering angle.We believe that these variations are a consequence of different forging histories and temperatures, and, if so, that would be a mean of identifying different workshops. We propose to analyse, using neutron diffraction, the presence, type and intensity of anisotropy in cementite for a set of known origin wootz steel weapons from the Oriental gallery of the Wallace Collection.
DOI: 10.5286/isis.e.rb1968007
title: Muon spin relaxation study of Halden like spin chains in Layered Li3Cu2SbO6

description: A large variety of exotic magnetic structure and relevant magnetic properties is observed in honeycomb layered oxides. Recently Koo et al. have observed two magnetic contributions, quasi-free spins at low-temperature and a spin-gapped in Li3Cu2SbO6. Static magnetic susceptibility and ESR data suggest ferromagnetic-antiferromagnetic alternating chains with JFM = -285 K and JAFM = 160 K with a significant amount of Li-defects in the chain. There are about 0.8 quasi-free spins S = ½ per formula unit which cannot be explained by Cu2+ions residing on Li position. Our neutron diffraction study on WISH (RB 1868023) did not reveal any sign of long-range magnetic order down to 50 mK, while inelastic neutron scattering experiments on MERLIN (RB 1890356) shows gaped magnetic excitation around 8 meV. Considering the importance of the Haldane gap, we propose to investigate Li3Cu2SbO6 using MuSR.