cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb1810316-2
title: Tuning the Luttinger liquid state in copper pyrazine-based spin chain systems

description: The ability to manipulate quantum states of matter is a goal of condensed matter science. Recent progress in molecular magnetism has shown the potential for gaining control over the structural building blocks of materials in order to engineer quantum magnetic properties. Our muon measurements have proven particularly important in demonstrating how such structural variation influences magnetic exchange pathways. Recently we showed how the systematic tuning of the interlayer separation in a two-dimensional molecular system affects its magnetic properties. Using this insight, we now seek to systematically vary the low-dimensional superexchange pathways in a class of tuneable one-dimensional materials in attempt to gain control over the spin Luttinger liquid state. We propose here to determine the ordering temperatures and probe the 1D dynamics of two novel spin chain materials.
DOI: 10.5286/isis.e.rb1810316-3
title: Tuning the Luttinger liquid state in copper pyrazine-based spin chain systems

description: The ability to manipulate quantum states of matter is a goal of condensed matter science. Recent progress in molecular magnetism has shown the potential for gaining control over the structural building blocks of materials in order to engineer quantum magnetic properties. Our muon measurements have proven particularly important in demonstrating how such structural variation influences magnetic exchange pathways. Recently we showed how the systematic tuning of the interlayer separation in a two-dimensional molecular system affects its magnetic properties. Using this insight, we now seek to systematically vary the low-dimensional superexchange pathways in a class of tuneable one-dimensional materials in attempt to gain control over the spin Luttinger liquid state. We propose here to determine the ordering temperatures and probe the 1D dynamics of two novel spin chain materials.
DOI: 10.5286/isis.e.rb1920123
title: Magnetic ordering in the layered oxide arsenide Sr2Cr3As2O3

description: This experiment will probe the evolution of magnetic ordering in Sr2Cr3As2O3, a compound containing Cr3+ moments in Cr2O square layers and Cr2+ moments in CrO2 layers. We will use temperature dependent measurements on WISH to probe the magnetic ordering on the two sublattices and whether there is any interaction between the two as well as any effects of the magnetic ordering on the crystal structure. We will compare the behaviour with that of related oxide arsenide and oxide chalcogenide compounds. This is a resubmission of RB1820061 as advised by the panel.
DOI: 10.5286/isis.e.rb1920195-2
title: Low-temperature structural phase transitions in CuSeO4·5D2O and CuBeF4·5D2O

description: The isostructural family of compounds that includes the familiar copper sulfate pentahydrate and the two less familiar title materials, has for decades been a model for studying a range of structural and magnetic phenomena. Our understanding of the magnetic transitions on cooling below 1 K have hitherto been based on an assumption that there is no preceding structural change, an assumption we now know to be false. We have shown that CuSO4.5D2O undergoes a loss of inversion symmetry at 32 K, with an associated cell doubling along the a- and c-axis directions. Curiously, there is some evidence in the literature for such a transition in the fluoroberyllate analogue but not the selenate or sulfate. Our aim here is to determine if the purported structural transition in the BeF4 analogue is the same as we observe in the sulfate and to test whether it also occurs in the selenate.
DOI: 10.5286/isis.e.rb1920430
title: High pressure and high temperature stabilized bismuth based multiferroic related compounds: Bi2MTiO6 (M=Co, Ni)

description: The new compound Bi2CoTiO6 is synthesized using high pressure - high temperature techniques. Its properties were characterized by X-ray diffraction, magnetic measurements, and scanning calorimetry. The related and known Bi2NiTiO6 will be studied for comparison. Since the crystal structure for these compounds is non-centrosymmetric, special multiferroic properties may emerge. We will for the first time determine the detailed crystal structure of Bi2CoTiO6 and benefit from neutrons which make a detailed description feasible while complementary X-ray data will be dominated by strong Bi-scattering. Of particular importance is to measure data at low temperatures. This will allow us to describe the ordering of magnetic moments, for Bi2CoTiO6 and Bi2NiTiO6. From characterizations done in the home lab, we know that magnetic transitions occur. Hence, we will collect data at several temperatures
DOI: 10.5286/isis.e.rb1920430-1
title: High pressure and high temperature stabilized bismuth based multiferroic related compounds: Bi2MTiO6 (M=Co, Ni)

description: The new compound Bi2CoTiO6 is synthesized using high pressure - high temperature techniques. Its properties were characterized by X-ray diffraction, magnetic measurements, and scanning calorimetry. The related and known Bi2NiTiO6 will be studied for comparison. Since the crystal structure for these compounds is non-centrosymmetric, special multiferroic properties may emerge. We will for the first time determine the detailed crystal structure of Bi2CoTiO6 and benefit from neutrons which make a detailed description feasible while complementary X-ray data will be dominated by strong Bi-scattering. Of particular importance is to measure data at low temperatures. This will allow us to describe the ordering of magnetic moments, for Bi2CoTiO6 and Bi2NiTiO6. From characterizations done in the home lab, we know that magnetic transitions occur. Hence, we will collect data at several temperatures
DOI: 10.5286/isis.e.rb1920656
title: Exchange kinetics of telechelic Cn-PEO-Cn micelles: effect of conformation and crystallinity

description: The microscopic dynamics of associative polymers that self-assemble into micellar structures play a key role for their macroscopical properties, with important implications for their application, such as in drug delivery or viscosity modification. Here we study a well-defined model system consisting of hydrophilic poly(ethylene oxide) (PEO) which is end-capped with hydrophobic n-alkyl groups with various length (Cn-PEO-Cn). A previous systematic structural SAXS/SANS study has shown that, depending on the length of the alkane chain length, either flower-like or cross-linked micelles are formed. Here we would like to study the molecular exchange kinetics of this system by time-resolved small-angle neutron scattering, applying the kinetic zero average contrast technique. The data will be directly compared to previously published data on mono-functional micelles.
DOI: 10.5286/isis.e.rb1920656-1
title: Exchange kinetics of telechelic Cn-PEO-Cn micelles: effect of conformation and crystallinity

description: The microscopic dynamics of associative polymers that self-assemble into micellar structures play a key role for their macroscopical properties, with important implications for their application, such as in drug delivery or viscosity modification. Here we study a well-defined model system consisting of hydrophilic poly(ethylene oxide) (PEO) which is end-capped with hydrophobic n-alkyl groups with various length (Cn-PEO-Cn). A previous systematic structural SAXS/SANS study has shown that, depending on the length of the alkane chain length, either flower-like or cross-linked micelles are formed. Here we would like to study the molecular exchange kinetics of this system by time-resolved small-angle neutron scattering, applying the kinetic zero average contrast technique. The data will be directly compared to previously published data on mono-functional micelles.
DOI: 10.17632/mvpknvkj6z.1
title: Data for: Network-Level Energy Consumption Estimation for Electric Vehicles Considering Vehicle and User Heterogeneity

description: Supplementary Data A - Matlab Code for Charging Time Estimation Supplementary Data B - Info of Normal Charging Stations and ETEC Distribution Results Supplementary Data C - Info of Fast Charging Stations and ETEC Distribution Results
DOI: 10.5286/isis.e.rb1920123-1
title: Magnetic ordering in the layered oxide arsenide Sr2Cr3As2O3

description: This experiment will probe the evolution of magnetic ordering in Sr2Cr3As2O3, a compound containing Cr3+ moments in Cr2O square layers and Cr2+ moments in CrO2 layers. We will use temperature dependent measurements on WISH to probe the magnetic ordering on the two sublattices and whether there is any interaction between the two as well as any effects of the magnetic ordering on the crystal structure. We will compare the behaviour with that of related oxide arsenide and oxide chalcogenide compounds. This is a resubmission of RB1820061 as advised by the panel.
DOI: 10.5286/isis.e.rb1920153
title: Ion and temperature effects on the self-assembly of short peptides - SANS studies

description: In this work, we have selected a group of 5 short peptides I3GGHK, I4GGHK, I3GGGHK, I3GGHHK and I3KGGH to study how changes in peptide concentration, [Cu2+] and temperature affect their nanostructuring by SANS. Through extensive studies by AFM and TEM, we found that changes in GH position in the sequence can hugely affect nanostructures via altering peptide packing, layer thickness and twisting. These structural effects affect how molecules can align and form layers and extend to higher orders of structures. Because these sizes are in the order of a few nanometers and difficult to image but are ideal for SANS measurements. SANS2D is preferred because of its high structural sensitivity and wider Q range to cover different size ranges. We request 2 days of SANS2d or 4 days of LOQ to complete the work.
DOI: 10.5286/isis.e.rb1920153-1
title: Ion and temperature effects on the self-assembly of short peptides - SANS studies

description: In this work, we have selected a group of 5 short peptides I3GGHK, I4GGHK, I3GGGHK, I3GGHHK and I3KGGH to study how changes in peptide concentration, [Cu2+] and temperature affect their nanostructuring by SANS. Through extensive studies by AFM and TEM, we found that changes in GH position in the sequence can hugely affect nanostructures via altering peptide packing, layer thickness and twisting. These structural effects affect how molecules can align and form layers and extend to higher orders of structures. Because these sizes are in the order of a few nanometers and difficult to image but are ideal for SANS measurements. SANS2D is preferred because of its high structural sensitivity and wider Q range to cover different size ranges. We request 2 days of SANS2d or 4 days of LOQ to complete the work.
DOI: 10.5286/isis.e.rb1920301
title: Possible new magnetic structure for pure Tb and its Y alloys at low temperature

description: Our previous study indicates the possible existence of a new modulated magnetic structure in pure Tb and its diluted Y alloys. Here we plan to take advantage of the capability of WISH to record the long d magnetic reflections to reveal the crystal and magnetic of Tb and Tb-0.1Y at low temperatures. The results could shed new light on the crystal chemistry of Tb and related rare earth metals.
DOI: 10.5286/isis.e.rb1920533
title: Direct Observation of Gram Negative Bacterial Membrane Disruption by Supramolecular Antimicrobials

description: Cyclic peptides with alternating side chain stereochemistry are capable of self-assembling into long nanotubes. The conjugation of polymers to these peptides renders the resulting nanotubes water soluble, whilst providing functionality. In response to the rising global threat of increasing antimicrobial resistance, we have been developing cationic cyclic peptide-polymer conjugates to target anionic Gram-negative bacterial membranes as supramolecular antimicrobials. Here, we propose to assemble asymmetric planar floating lipid bilayers on functionalised gold surfaces to mimic the outer membrane of Gram-negative bacteria. By using neutron reflectometry and exploiting isotopic contrast, we aim to determine the mechanism of membrane disruption by these materials whilst obtaining information relating the molecular properties of cyclic peptide-polymer conjugates to their antimicrobial activity
DOI: 10.5286/isis.e.rb1920533-1
title: Direct Observation of Gram Negative Bacterial Membrane Disruption by Supramolecular Antimicrobials

description: Cyclic peptides with alternating side chain stereochemistry are capable of self-assembling into long nanotubes. The conjugation of polymers to these peptides renders the resulting nanotubes water soluble, whilst providing functionality. In response to the rising global threat of increasing antimicrobial resistance, we have been developing cationic cyclic peptide-polymer conjugates to target anionic Gram-negative bacterial membranes as supramolecular antimicrobials. Here, we propose to assemble asymmetric planar floating lipid bilayers on functionalised gold surfaces to mimic the outer membrane of Gram-negative bacteria. By using neutron reflectometry and exploiting isotopic contrast, we aim to determine the mechanism of membrane disruption by these materials whilst obtaining information relating the molecular properties of cyclic peptide-polymer conjugates to their antimicrobial activity
DOI: 10.5286/isis.e.rb1920534
title: Neutron scattering study on noncollinear antiferromagnets D019 hcp-Mn3X (X = Ga and Sn) thin films

description: Currently, we are reaching capacity limits in conventional Si-based memory devices, due to restrictions on further miniaturization. The concept of antiferromagnetic spin electronics (spintronics) has gained much traction to overcome this challenge. It has become clear that AFMs are actually vastly advantageous to realize memory devices, being far more robust than FM-based devices, with high packing density, and insensitivity to external fields. Unfortunately, to date, only a few materials have emerged as candidates. Thus, in our research, we have searched for the new non-collinear AFM Mn3X (X = Ga, Sn) materials and have fabricated them in thin film form. In order to access its fundamental magnetic property, we will use a magnetic neutron scattering technique to observe its noncollinear magnetic configuration.
DOI: 10.5286/isis.e.rb1920534-1
title: Neutron scattering study on noncollinear antiferromagnets D019 hcp-Mn3X (X = Ga and Sn) thin films

description: Currently, we are reaching capacity limits in conventional Si-based memory devices, due to restrictions on further miniaturization. The concept of antiferromagnetic spin electronics (spintronics) has gained much traction to overcome this challenge. It has become clear that AFMs are actually vastly advantageous to realize memory devices, being far more robust than FM-based devices, with high packing density, and insensitivity to external fields. Unfortunately, to date, only a few materials have emerged as candidates. Thus, in our research, we have searched for the new non-collinear AFM Mn3X (X = Ga, Sn) materials and have fabricated them in thin film form. In order to access its fundamental magnetic property, we will use a magnetic neutron scattering technique to observe its noncollinear magnetic configuration.
DOI: 10.15468/03qgbd
title: Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3 D Cybertaxonomy

description: This dataset contains the digitized treatments in Plazi based on the original journal article Hita-Garcia, Francisco, Lieberman, Ziv, Audisio, Tracy L., Liu, Cong, Economo, Evan P. (2019): Revision of the Highly Specialized Ant Genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with X-Ray Microtomography and 3 D Cybertaxonomy. Insect Systematics and Diversity 5: 1-84, DOI: 10.1093/isd/ixz015
DOI: 10.25810/6qjv-1296.19
title: Indian Newspaper Coverage of Climate Change or Global Warming, 2004-2019 - October 2019

description: The Media and Climate Change Observatory Data monitors 74 sources (across newspapers, radio and TV) in 38 countries in seven different regions around the world. Data is assembled by accessing archives through the Lexis Nexis, Proquest and Factiva databases via the University of Colorado libraries. More information may be found at: http://sciencepolicy.colorado.edu/icecaps/research/media_coverage/index.html. These data include Excel (.xlsx), CSV (.csv), and plain-text README files (.txt).
DOI: 10.5281/zenodo.3542145
title: IO Islamic 1938. Persian Translation of Abû Ja'far Muhammad bin Jarir bin Yazid al Ṭabari's General History

description: IO Islamic 1938. Persian Translation of Abû Ja’far Muhammad bin Jarir bin Yazid al Ṭabari’s General History
DOI: 10.5281/zenodo.3542146
title: IO Islamic 1938. Persian Translation of Abû Ja'far Muhammad bin Jarir bin Yazid al Ṭabari's General History

description: IO Islamic 1938. Persian Translation of Abû Ja’far Muhammad bin Jarir bin Yazid al Ṭabari’s General History
DOI: 10.5286/isis.e.rb1920171
title: Investigations of complex magnetic ground states of Ce2IrGe3 and Ce2PtGe3 compounds: Inelastic neutron scattering study

description: Cerium based Ce2MX3 (M = d-electron element, X is a p-electron metal) Kondo lattice systems has received considerable attention due to its exotic magnetic ground states such as heavy fermion behaviour, spin-glass like behaviour etc. Ce2IrGe3 shows long-range ferromagnetic-like ordering below 4 K with enhanced specific heat and logarithmic temperature dependence of the resistivity at low temperature suggest strong electronic correlations. Both compounds behave like Kondo lattice at low temperature and show spin glass like behaviour. So it would be of utmost interest to investigate the CEF excitations in Ce2IrGe3 and Ce2PtGe3 compounds using inelastic neutron scattering to understand the complex magnetic ground states.
DOI: 10.5286/isis.e.rb1920171-1
title: Investigations of complex magnetic ground states of Ce2IrGe3 and Ce2PtGe3 compounds: Inelastic neutron scattering study

description: Cerium based Ce2MX3 (M = d-electron element, X is a p-electron metal) Kondo lattice systems has received considerable attention due to its exotic magnetic ground states such as heavy fermion behaviour, spin-glass like behaviour etc. Ce2IrGe3 shows long-range ferromagnetic-like ordering below 4 K with enhanced specific heat and logarithmic temperature dependence of the resistivity at low temperature suggest strong electronic correlations. Both compounds behave like Kondo lattice at low temperature and show spin glass like behaviour. So it would be of utmost interest to investigate the CEF excitations in Ce2IrGe3 and Ce2PtGe3 compounds using inelastic neutron scattering to understand the complex magnetic ground states.
DOI: 10.5286/isis.e.rb1920301-1
title: Possible new magnetic structure for pure Tb and its Y alloys at low temperature

description: Our previous study indicates the possible existence of a new modulated magnetic structure in pure Tb and its diluted Y alloys. Here we plan to take advantage of the capability of WISH to record the long d magnetic reflections to reveal the crystal and magnetic of Tb and Tb-0.1Y at low temperatures. The results could shed new light on the crystal chemistry of Tb and related rare earth metals.
DOI: 10.5286/isis.e.rb1920569
title: Magnetic excitations in square lattice 2D Heisenberg Antiferromagnet Sr3Fe2O6.5

description: Strontium iron oxides belonging to the RP series Srn+1FenO3n+1 (n = 1, 2, ..,1) may offer unique insights into the differences between the magnetic properties of the manganates,ruthenates, and ferrates. The present proposal on Sr3Fe2O6.5 is motivated by our recent observations that there is a change in crystal structure from tetragonal (for Sr3Fe2O7) to orthorhombic ( for Sr3Fe2O6.5), where the 4-fold symmetry is lost. A preliminary refinement suggests that in the magnetic structure moments lie perpendicular to the c axis and are coupled ferromagnetically within each bilayer. Upon heating to 335 K, the crystal structure changes to tetragonal and the compound doesn't order magnetically after cooling down to 2 K (cooling from 335 K,called quenched condition). We want to investigation the magnetic excitation in the quenched condition using the chopper spectrometer, MERLIN. ISIS, U.K
DOI: 10.5286/isis.e.rb1920569-1
title: Magnetic excitations in square lattice 2D Heisenberg Antiferromagnet Sr3Fe2O6.5

description: Strontium iron oxides belonging to the RP series Srn+1FenO3n+1 (n = 1, 2, ..,1) may offer unique insights into the differences between the magnetic properties of the manganates,ruthenates, and ferrates. The present proposal on Sr3Fe2O6.5 is motivated by our recent observations that there is a change in crystal structure from tetragonal (for Sr3Fe2O7) to orthorhombic ( for Sr3Fe2O6.5), where the 4-fold symmetry is lost. A preliminary refinement suggests that in the magnetic structure moments lie perpendicular to the c axis and are coupled ferromagnetically within each bilayer. Upon heating to 335 K, the crystal structure changes to tetragonal and the compound doesn't order magnetically after cooling down to 2 K (cooling from 335 K,called quenched condition). We want to investigation the magnetic excitation in the quenched condition using the chopper spectrometer, MERLIN. ISIS, U.K
DOI: 10.5286/isis.e.rb1920569-2
title: Magnetic excitations in square lattice 2D Heisenberg Antiferromagnet Sr3Fe2O6.5

description: Strontium iron oxides belonging to the RP series Srn+1FenO3n+1 (n = 1, 2, ..,1) may offer unique insights into the differences between the magnetic properties of the manganates,ruthenates, and ferrates. The present proposal on Sr3Fe2O6.5 is motivated by our recent observations that there is a change in crystal structure from tetragonal (for Sr3Fe2O7) to orthorhombic ( for Sr3Fe2O6.5), where the 4-fold symmetry is lost. A preliminary refinement suggests that in the magnetic structure moments lie perpendicular to the c axis and are coupled ferromagnetically within each bilayer. Upon heating to 335 K, the crystal structure changes to tetragonal and the compound doesn't order magnetically after cooling down to 2 K (cooling from 335 K,called quenched condition). We want to investigation the magnetic excitation in the quenched condition using the chopper spectrometer, MERLIN. ISIS, U.K
DOI: 10.5286/isis.e.rb1920738
title: Effects of Chiral Components on the Structure of Deep Eutectic Solvents

description: Deep eutectic solvents (DES) are novel liquids composed of inexpensive components, and are non-flammable, with a low volatility. One problem with DES is frequently their relatively high viscosity so selecting components which make a tractable liquid with low enough melting point and viscosity to be useful in applications is challenging. Here we wish to probe the structure of DES which have similar components but very different viscosities & melting points, based on tartaric acid (TA) with either choline chloride or urea, both frequently used in DES formulation. TA-based DES also allow us to study the role of chiral components on DES structure, since the D- and L- forms are both readily availably, and can be mixed to make a racemate. We will compare the structures of choline chloride:TA, urea:TA, and related urea:potassium sodium tartrate which span a range of viscosities & melting points