cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2420089
title: Magnetic structure of the quasicrystal Cd6Tb 1/1 approximant crystal

description: Quasicrystals and their related approximant crystals exhibit unique atomic structures that can give rise to novel magnetic ground states. Among the Tsai-type approximant crystals, the Cd6Tb 1/1 approximant is particularly intriguing as its electron-per-atom ratio of 2.14 and negative Curie-Weiss temperature suggest it may host a new form of non-collinear magnetic order, distinct from the whirling antiferromagnetic structures found in previously studied Au-based approximants.

Despite being the first antiferromagnetic Tsai-type approximant discovered over a decade ago, the magnetic structure of Cd6Tb has remained unexplored, primarily due to the high neutron absorption of cadmium. This proposal aims to unveil the magnetic ground state in Cd6Tb through powder neutron diffraction measurements on the WISH diffractometer at ISIS.

Diffraction patterns will be collected at 2K, 10K, 20K and 30K, spanning the three observed magnetic transitions at 2.4K, 18K and 23K. Rietveld refinement analysis will enable determination of the magnetic structure across the different regimes. Characterizing this putatively new magnetic texture will deepen our fundamental understanding of magnetism in aperiodic systems and the role of chemical composition in realizing diverse spin textures predicted by theory.
DOI: 10.5286/isis.e.rb2420089-1
title: Magnetic structure of the quasicrystal Cd6Tb 1/1 approximant crystal

description: Quasicrystals and their related approximant crystals exhibit unique atomic structures that can give rise to novel magnetic ground states. Among the Tsai-type approximant crystals, the Cd6Tb 1/1 approximant is particularly intriguing as its electron-per-atom ratio of 2.14 and negative Curie-Weiss temperature suggest it may host a new form of non-collinear magnetic order, distinct from the whirling antiferromagnetic structures found in previously studied Au-based approximants.

Despite being the first antiferromagnetic Tsai-type approximant discovered over a decade ago, the magnetic structure of Cd6Tb has remained unexplored, primarily due to the high neutron absorption of cadmium. This proposal aims to unveil the magnetic ground state in Cd6Tb through powder neutron diffraction measurements on the WISH diffractometer at ISIS.

Diffraction patterns will be collected at 2K, 10K, 20K and 30K, spanning the three observed magnetic transitions at 2.4K, 18K and 23K. Rietveld refinement analysis will enable determination of the magnetic structure across the different regimes. Characterizing this putatively new magnetic texture will deepen our fundamental understanding of magnetism in aperiodic systems and the role of chemical composition in realizing diverse spin textures predicted by theory.
DOI: 10.5286/isis.e.rb2490240-1
title: Dynamics in a modified MAPI!
DOI: 10.3535/gqj-v1r-elv
title: Sophora cassioides (F.Phil.) Sparre

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/nwa-t0b-3ty
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2455019-2
title: In-Situ Measurement of High Pressure Gaseous Hydrogen Ingression in Metal
DOI: 10.5286/isis.e.rb2490240
title: Dynamics in a modified MAPI!
DOI: 10.34816/ifao.archives.232876
title: SAQQARA_nb_1994_03355

description: Référence : nb_1994_03355<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/1vy-1wg-djw
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/q2e-lkp-a21
title: Allium L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2390046-1
title: Hydride mobility in potassium hydride intercalated graphite
DOI: 10.5286/isis.e.rb2455024
title: Characterising the interactions of stannous fluoride with bacterial cells
DOI: 10.5286/isis.e.rb2455024-1
title: Characterising the interactions of stannous fluoride with bacterial cells
DOI: 10.21233/n3qj6b
title: Sand pollen surface sample dataset

description: Raw data for the Sand 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: 10.3535/7eg-0g0-87j
title: Pogonatherum crinitum (Thunb.) Kunth

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/r9k-pqr-8ag
title: Viola rafinesquei Greene

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2490278-1
title: Recovered High Pressure Perovskite TeCoO3
DOI: 10.5286/isis.e.rb2490279-1
title: Duplicate Of: Recovered High Pressure Perovskite TeCoO3
DOI: 10.5286/isis.e.rb2490297-1
title: Room temperature diffraction of Prussian white
DOI: 10.34816/ifao.archives.232877
title: SAQQARA_nb_1994_03356

description: Référence : nb_1994_03356<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/qdk-acq-ep3
title: Reseda L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410580-1
title: Operando µSR of P2-type Layered Transition Metal Oxides for Sodium Ion Batteries

description: With its high natural abundance, lower cost and amenable redox potential, sodium ion batteries (SIBs) present a sustainable energy storage alternative to lithium ion. Layered transition metal oxides in the P2 structure show considerable promise as cathodes, where fast Na+ dynamics arise from the low diffusion barrier between adjacent prismatic sites in the Na layer. Here, we propose the first operando study of P2-type Na2/3Ni1/3Mn2/3O2 using the ISIS Battery Analysis by Muon (BAM) cell to investigate the influence of Li on the fundamental Na+ transport mechanism of this promising class of cathodes. Understanding the role of ionic kinetics in these materials is crucial to fine-tune the structural design and cycling protocols to optimize their future electrochemical performance for sustainable energy storage.
DOI: 10.5286/isis.e.rb2490280-1
title: Duplicate Of: Duplicate Of: Recovered High Pressure Perovskite TeSeCo2O6
DOI: 10.3535/hcm-txl-qbl
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/tv1-nf9-na1
title: Brugmansia Pers.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410580
title: Operando µSR of P2-type Layered Transition Metal Oxides for Sodium Ion Batteries

description: With its high natural abundance, lower cost and amenable redox potential, sodium ion batteries (SIBs) present a sustainable energy storage alternative to lithium ion. Layered transition metal oxides in the P2 structure show considerable promise as cathodes, where fast Na+ dynamics arise from the low diffusion barrier between adjacent prismatic sites in the Na layer. Here, we propose the first operando study of P2-type Na2/3Ni1/3Mn2/3O2 using the ISIS Battery Analysis by Muon (BAM) cell to investigate the influence of Li on the fundamental Na+ transport mechanism of this promising class of cathodes. Understanding the role of ionic kinetics in these materials is crucial to fine-tune the structural design and cycling protocols to optimize their future electrochemical performance for sustainable energy storage.
DOI: 10.5286/isis.e.rb2420130
title: A Supercritical Pathway for Biomimetic Membrane Formation in Extra-Terrestrial Environments

description: Cell membranes are complex structures that are robust enough to withstand changes in temperature and pressure, yet are stable and flexible enough to cope with a vast library of cellular processes. However, the mild conditions on Earth - conditions where water is liquid and membranes can be thermally stable - are famously scarce in the vastness of space. Recent data collected by the Cassini-Huygens probe, and subsequently studied by computer modelling has shown that some nitrogen-containing “tholin” molecules may be able to spontaneously form membrane-like structures in the cold liquid methane lakes on Titan, one of the moons of Saturn. In this experiment we will recreate this atmosphere at ISIS by cooling a tholin solution in supercritical methane to cryogenic temperatures, and probing the behaviour of these systems using neutron scattering.
DOI: 10.5286/isis.e.rb2420130-1
title: A Supercritical Pathway for Biomimetic Membrane Formation in Extra-Terrestrial Environments

description: Cell membranes are complex structures that are robust enough to withstand changes in temperature and pressure, yet are stable and flexible enough to cope with a vast library of cellular processes. However, the mild conditions on Earth - conditions where water is liquid and membranes can be thermally stable - are famously scarce in the vastness of space. Recent data collected by the Cassini-Huygens probe, and subsequently studied by computer modelling has shown that some nitrogen-containing “tholin” molecules may be able to spontaneously form membrane-like structures in the cold liquid methane lakes on Titan, one of the moons of Saturn. In this experiment we will recreate this atmosphere at ISIS by cooling a tholin solution in supercritical methane to cryogenic temperatures, and probing the behaviour of these systems using neutron scattering.
DOI: 10.34816/ifao.archives.232878
title: SAQQARA_nb_1994_03357

description: Référence : nb_1994_03357<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/sth-vmq-skw
title: Euphorbia humistrata Engelm. ex A.Gray

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/xf7-0kx-2kb
title: Asparagus Tourn. ex L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2400067
title: Magnetic diffuse scattering investigation in the spin liquid candidate on a stuffed honeycomb lattice:TbBO3

description: Quantum spin liquid (QSL) represents a highly entangled state of matter characterized by the absence of long-range magnetic order, despite strong exchange interactions between its magnetic constituents. QSLs are ideal hosts of exotic fractional excitations coupled to emergent gauge fields and potential applications in fault-tolerant quantum computing. The experimental realization of QSLs remains elusive owing to defects and anti-site disorder in real materials. Our focus is on a “stuffed honeycomb lattice” frustrated rare-earth TbBO3 comprised of a honeycomb lattice with a superimposed triangular lattice formed by additional magnetic ions at the center of each hexagon, that can support exotic quantum phenomena, including elusive Dirac QSL with fractional excitations. Our muon experiments down to 16 mK rule out magnetic ordering and spin freezing supported by ac susceptibility down to 50 mK. Specific heat down to 100 mK shows no signature of magnetic ordering and it shows power law behavior indicative of gapless spin excitations supported by NMR results. We plan to perform neutron diffraction on the WISH instrument via Rapid Access at sub-Kelvin temperatures to reveal the exact magnetic structure, shed insights into the ground state and the short-range spin correlations at low-T via diffuse neutron scattering. One paper was submitted to PRL on this material [12], which is nearly accepted, but one of the referees suggested diffuse scattering data of TbBO3 before acceptance.
DOI: 10.5286/isis.e.rb2400067-1
title: Magnetic diffuse scattering investigation in the spin liquid candidate on a stuffed honeycomb lattice:TbBO3

description: Quantum spin liquid (QSL) represents a highly entangled state of matter characterized by the absence of long-range magnetic order, despite strong exchange interactions between its magnetic constituents. QSLs are ideal hosts of exotic fractional excitations coupled to emergent gauge fields and potential applications in fault-tolerant quantum computing. The experimental realization of QSLs remains elusive owing to defects and anti-site disorder in real materials. Our focus is on a “stuffed honeycomb lattice” frustrated rare-earth TbBO3 comprised of a honeycomb lattice with a superimposed triangular lattice formed by additional magnetic ions at the center of each hexagon, that can support exotic quantum phenomena, including elusive Dirac QSL with fractional excitations. Our muon experiments down to 16 mK rule out magnetic ordering and spin freezing supported by ac susceptibility down to 50 mK. Specific heat down to 100 mK shows no signature of magnetic ordering and it shows power law behavior indicative of gapless spin excitations supported by NMR results. We plan to perform neutron diffraction on the WISH instrument via Rapid Access at sub-Kelvin temperatures to reveal the exact magnetic structure, shed insights into the ground state and the short-range spin correlations at low-T via diffuse neutron scattering. One paper was submitted to PRL on this material [12], which is nearly accepted, but one of the referees suggested diffuse scattering data of TbBO3 before acceptance.
DOI: 10.5286/isis.e.rb2410001-1
title: Investigating local dissolution of zirconium hydrides under elastic stress

description: Zirconium-based nuclear fuel cladding tubes envelop nuclear fuel pellets and thus are part of fuel rods used in nuclear power plants.Because the cladding takes up hydrogen during operation of nuclear power plants, the hydrogen distribution within the material under the influence of stress shall be investigated in-situ by means of neutron imaging.
We want to in-situ monitor local hydride dissolution processes within zirconium samples under several temperature conditions (375-450°C) and applied tensile forces. With the KIT's portable INCHAMEL facility samples can be homogeneously heated and stress/strain influences on the local dissolution behaviour of zirconium hydrides in dependence on the hydrogen solubility and the chemical potential of hydrogen can be determined.
DOI: 10.3535/2p6-tre-pav
title: Eucryphia cordifolia Cav.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/dkw-l9z-w0l
title: Eucryphia cordifolia Cav.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2200379
title: Hydrocarbon polymer membranes with sub-nanometre pores for flow battery energy storage

description: Membranes with fast and selective ion transport are widely used for water purification and energy conversion and storage devices. Despite various improvements, it remains challenging to design cost-effective, easily processable ion-conductive membranes with well-defined pore architectures. We have recently developed a new generation of ion-conducting membranes with comparable, if not superior, performance and stability to the current gold standard, Nafion. It is now pressing to reveal the structure-transport correlation of these new chemistries, as the results are critical to proceed with the patenting process, and will direct future advanced designs. We now ask for time on the QENS sprectrometers to help this endevour, which will important information as already proved by our group on other polymer exchange membranes.
DOI: 10.5286/isis.e.rb2200379-1
title: Hydrocarbon polymer membranes with sub-nanometre pores for flow battery energy storage

description: Membranes with fast and selective ion transport are widely used for water purification and energy conversion and storage devices. Despite various improvements, it remains challenging to design cost-effective, easily processable ion-conductive membranes with well-defined pore architectures. We have recently developed a new generation of ion-conducting membranes with comparable, if not superior, performance and stability to the current gold standard, Nafion. It is now pressing to reveal the structure-transport correlation of these new chemistries, as the results are critical to proceed with the patenting process, and will direct future advanced designs. We now ask for time on the QENS sprectrometers to help this endevour, which will important information as already proved by our group on other polymer exchange membranes.
DOI: 10.5286/isis.e.rb2410001
title: Investigating local dissolution of zirconium hydrides under elastic stress

description: Zirconium-based nuclear fuel cladding tubes envelop nuclear fuel pellets and thus are part of fuel rods used in nuclear power plants.Because the cladding takes up hydrogen during operation of nuclear power plants, the hydrogen distribution within the material under the influence of stress shall be investigated in-situ by means of neutron imaging.
We want to in-situ monitor local hydride dissolution processes within zirconium samples under several temperature conditions (375-450°C) and applied tensile forces. With the KIT's portable INCHAMEL facility samples can be homogeneously heated and stress/strain influences on the local dissolution behaviour of zirconium hydrides in dependence on the hydrogen solubility and the chemical potential of hydrogen can be determined.
DOI: 10.34816/ifao.archives.232879
title: SAQQARA_nb_1994_03358

description: Référence : nb_1994_03358<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/dyx-rsr-53p
title: Aristotelia chilensis (Molina) Stuntz

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/etk-r0b-j9v
title: Eucryphia cordifolia Cav.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2420441
title: Role of Functionalized and Unfunctionalized Lignin Nanofiller on the Nanostructure of Sulfonated Ionomer Nanocomposite Membranes

description: Sulfonated poly(ether ether ketone) (SPEEK) has emerged as a promising proton exchange membrane for vanadium redox flow batteries (VRFBs) and an encouraging alternative to the current benchmark material, Nafion. Compared to Nafion, SPEEK is significantly lower in cost and demonstrates similar proton conductivity, however, both membranes suffer from high vanadium ion permeability which leads to a reduction in battery lifetime and performance. In this study, lignin, a ‘green’ nanofiller, was incorporated into SPEEK to fabricate SPEEK-lignin nanocomposites to help combat this issue. The impact of unfunctionalized and various functionalized lignin on the ion transport and membrane performance properties were investigated. SPEEK was prepared via post-polymerization functionalization using concentrated sulfuric acid. Amine-functionalized and sulfuric acid-functionalized lignin were prepared by reacting lignin with epichlorohydrin and sulfuric acid, respectively. The lignin loadings introduced into SPEEK ranged from 0 to 25 mass% and were fractionated into low and high molecular weights (LMW and HMW, respectively). It was observed that vanadium ion permeability decreased with increasing lignin loading for all lignin-SPEEK nanocomposites compared to neat SPEEK. Small-angle neutron scattering study on SPEEK and functionalized lignin-SPEEK membranes can directly observe the microstructure of the membrane and elucidate the structure-property relationships of these membranes.
DOI: 10.5286/isis.e.rb2420441-1
title: Role of Functionalized and Unfunctionalized Lignin Nanofiller on the Nanostructure of Sulfonated Ionomer Nanocomposite Membranes

description: Sulfonated poly(ether ether ketone) (SPEEK) has emerged as a promising proton exchange membrane for vanadium redox flow batteries (VRFBs) and an encouraging alternative to the current benchmark material, Nafion. Compared to Nafion, SPEEK is significantly lower in cost and demonstrates similar proton conductivity, however, both membranes suffer from high vanadium ion permeability which leads to a reduction in battery lifetime and performance. In this study, lignin, a ‘green’ nanofiller, was incorporated into SPEEK to fabricate SPEEK-lignin nanocomposites to help combat this issue. The impact of unfunctionalized and various functionalized lignin on the ion transport and membrane performance properties were investigated. SPEEK was prepared via post-polymerization functionalization using concentrated sulfuric acid. Amine-functionalized and sulfuric acid-functionalized lignin were prepared by reacting lignin with epichlorohydrin and sulfuric acid, respectively. The lignin loadings introduced into SPEEK ranged from 0 to 25 mass% and were fractionated into low and high molecular weights (LMW and HMW, respectively). It was observed that vanadium ion permeability decreased with increasing lignin loading for all lignin-SPEEK nanocomposites compared to neat SPEEK. Small-angle neutron scattering study on SPEEK and functionalized lignin-SPEEK membranes can directly observe the microstructure of the membrane and elucidate the structure-property relationships of these membranes.
DOI: 10.5286/isis.e.rb2490300-1
title: Crystal Field Levels in Ln2Be2GeO7
DOI: 10.3535/0x0-xnr-ne9
title: Croton glandulosus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2420393
title: Temperature-dependent Behaviour of Jahn−Teller Distortions in Defect-free LiNiO2

description: This work aims to investigate the nature of Jahn−Teller (JT) distortions in candidate lithium-ion cathode material lithium nickel oxide, LiNiO2 (LNO). LNO typically crystallises in the rhombohedral space group R-3m, where the threefold symmetry precludes a macroscopic JT distortion despite the low-spin d7 electronic configuration of the Ni3+. Previous neutron PDF measurements confirm local JT distortions in this material at low temperatures but their exact nature—whether they are dynamic or static, and in turn their spatial distribution—remains an open question. Our previous AIMD calculations indicate the important role that point defects play in the behaviour and spatial coherence of the JT distortions, pinning the undistorted domains. We have an ion-exchanged LNO sample, synthesised from the sodium analogue NaNiO2 (NNO), which retains the defect-free property of the NNO. A deeper understanding of the JT distortions and their temperature sensitivity in a sample with no defects will improve our understanding of the interplay between orbital, magnetic and elastic degrees of freedom in LNO, and act as a starting point for understanding the wider influence of point-defects in LNO as well as the structure of the material at different stages of lithiation.