cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2220486-2
title: Ag3LiIr1.4Ru0.6O6: a novel Kitaev Quantum Materials Candidate containing Ir (5d5, Jeff =1/2) and Ru (4d4, S=1)
DOI: 10.5286/isis.e.rb2220759
title: Magnetic ground state and magnetic field induced spin flop transition in FeVO4 multiferroic: µSR study
DOI: 10.3535/4hf-hvj-e5v
title: Veronica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/e1y-3nh-gd0
title: Polygala L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310601-1
title: Molecular structuring within hydrophilic and hydrophobic confining matrices

description: Hydrophobicity and hydrophilicity of contact surfaces in membrane separations for water purification have been recognised as playing an important, yet unclear, role in the process performance. Several experimental and molecular dynamics studies address the question what surface chemistry the membrane materials for this application should have to ensure high water permeabilities. Mostly contradicting findings are reported.
We propose to probe the structural properties of water confined within hydrophobic and hydrophilic pores to investigate experimentally, with atomic resolution, the aforementioned conundrum. Additionally, structuring of two alcohols differing by the length of hydrophobic hydrocarbon backbone in their structures (i.e. methanol and 1-propanol) upon confinement within the same materials will be probed to build a broader understanding of the impact of hydrophobicity/hydrophilicity of both – confining matrices and confined molecules.
DOI: 10.5286/isis.e.rb2320021
title: Magnetic structure of a frustrated honeycomb-lattice antiferromagnet, CaMn2As2.

description: We wish to perform neutron powder diffraction measurements on triturated crystals of a frustrated honeycomb-lattice antiferromagnet, CaMn2As2, at temperatures below and above its magnetic phase transition at TN = 62 K. We expect to collect data suitable for solving the low-T magnetic structure of CaMn2As2 and also for exploring its magnetic behavior above TN. Our interest in this material was simulated by reports indicating that an isostructural and isoelectronic compound, CaMn2Sb2, is located close to a tricritical point known for the J1-J2-J3 classical Heisenberg model of spins on a honeycomb lattice. Near this point, the Néel phase and two different spiral phases become degenerate and therefore strong magnetic frustration is expected. While CaMn2Sb2 adopts the Néel phase, for CaMn2As2 an incommensurate spiral magnetic structure is suspected based on the recently reported 75As nuclear magnetic resonance study. The accurate determination of the low-temperature magnetic ordering in CaMn2As2 is the primary goal of the proposed experiment. The expected results will be used to locate this compound on the Heisenberg phase diagram, they will inform theoretical studies and guide our doping attempts aiming at inducing a spin liquid state.
DOI: 10.5286/isis.e.rb2320021-1
title: Magnetic structure of a frustrated honeycomb-lattice antiferromagnet, CaMn2As2.

description: We wish to perform neutron powder diffraction measurements on triturated crystals of a frustrated honeycomb-lattice antiferromagnet, CaMn2As2, at temperatures below and above its magnetic phase transition at TN = 62 K. We expect to collect data suitable for solving the low-T magnetic structure of CaMn2As2 and also for exploring its magnetic behavior above TN. Our interest in this material was simulated by reports indicating that an isostructural and isoelectronic compound, CaMn2Sb2, is located close to a tricritical point known for the J1-J2-J3 classical Heisenberg model of spins on a honeycomb lattice. Near this point, the Néel phase and two different spiral phases become degenerate and therefore strong magnetic frustration is expected. While CaMn2Sb2 adopts the Néel phase, for CaMn2As2 an incommensurate spiral magnetic structure is suspected based on the recently reported 75As nuclear magnetic resonance study. The accurate determination of the low-temperature magnetic ordering in CaMn2As2 is the primary goal of the proposed experiment. The expected results will be used to locate this compound on the Heisenberg phase diagram, they will inform theoretical studies and guide our doping attempts aiming at inducing a spin liquid state.
DOI: 10.3535/aa1-rav-rkb
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/zja-nzq-azh
title: Orchis variegata All.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310601
title: Molecular structuring within hydrophilic and hydrophobic confining matrices

description: Hydrophobicity and hydrophilicity of contact surfaces in membrane separations for water purification have been recognised as playing an important, yet unclear, role in the process performance. Several experimental and molecular dynamics studies address the question what surface chemistry the membrane materials for this application should have to ensure high water permeabilities. Mostly contradicting findings are reported.
We propose to probe the structural properties of water confined within hydrophobic and hydrophilic pores to investigate experimentally, with atomic resolution, the aforementioned conundrum. Additionally, structuring of two alcohols differing by the length of hydrophobic hydrocarbon backbone in their structures (i.e. methanol and 1-propanol) upon confinement within the same materials will be probed to build a broader understanding of the impact of hydrophobicity/hydrophilicity of both – confining matrices and confined molecules.
DOI: 10.5286/isis.e.rb2410260
title: Strange Metal Behaviour and Spin Fluctuations in Overdoped La2-xSrxCuO4

description: The normal state of cuprate superconductors is highly anomalous. The electron quasiparticles show so-called "strange metal" behavior over a range of dopings. The resistivity shows an unusual ρ∝ T behavior over a wide temperature range (i.e. up to 500 K). This contrasts with the ρ ~T^2 variation expected from electron-electron scattering associated with a Fermi liquid or a higher power law expected from scattering from phonons. We believe this behavior is connected to spin fluctuations and have recently demonstrated that strongly temperature dependent spin fluctuations are present in the overdoped cuprate La2-xSrxCuO4 (x=0.22). Here we propose to test whether these spin fluctuation show an unusual form of quantum critical dynamical scaling with has been observed in heavy fermion systems that could explain the strange metal behavior.
DOI: 10.5286/isis.e.rb2410260-1
title: Strange Metal Behaviour and Spin Fluctuations in Overdoped La2-xSrxCuO4

description: The normal state of cuprate superconductors is highly anomalous. The electron quasiparticles show so-called "strange metal" behavior over a range of dopings. The resistivity shows an unusual ρ∝ T behavior over a wide temperature range (i.e. up to 500 K). This contrasts with the ρ ~T^2 variation expected from electron-electron scattering associated with a Fermi liquid or a higher power law expected from scattering from phonons. We believe this behavior is connected to spin fluctuations and have recently demonstrated that strongly temperature dependent spin fluctuations are present in the overdoped cuprate La2-xSrxCuO4 (x=0.22). Here we propose to test whether these spin fluctuation show an unusual form of quantum critical dynamical scaling with has been observed in heavy fermion systems that could explain the strange metal behavior.
DOI: 10.3535/2tv-eav-wxr
title: Stipa L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220563-2
title: Structure and bonding in amorphous MoS3
DOI: 10.5286/isis.e.rb2410532
title: Anharmonicity as a reaction indicator: thermal vibrations in the graphitic carbon nitride precursor melamine

description: In our proposed study, we investigate melamine (C3N6H6) as a precursor for the graphitic carbon nitride (g-CN) materials with interesting properties for e.g. catalysis. A previous electron density study of melamine by synchrotron single crystal X-ray diffraction (SCXRD) at 25 K, lead to a proposed mechanism for the condensation reaction of melamine through melam to g-CN by evaporation of ammonia. The condensation hypothesis is based on structural asymmetry, one amine group in melamine is significantly more pyramidal (like ammonia) than the two other, and thus strongly relies on accurate hydrogen atom positions. Single crystal neutron diffraction experiments could uniquely offer information on especially unambiguous hydrogen positions, anisotropic atomic displacement parameters and possibly anharmonic vibrations, which could validate the conclusions from the SCXRD study. We, furthermore, intend to investigate anharmonic motion as a reaction indicator for the condensation process. This requires accurate determination of structure and anharmonic vibrational parameters of nitrogen and hydrogen at several temperatures, which only neutron diffraction can provide. We apply for 7 days of beamtime at the SXD instrument, allowing us to conduct neutron diffraction experiments at 25, 100, 300 and 400 K.
DOI: 10.5286/isis.e.rb2410532-1
title: Anharmonicity as a reaction indicator: thermal vibrations in the graphitic carbon nitride precursor melamine

description: In our proposed study, we investigate melamine (C3N6H6) as a precursor for the graphitic carbon nitride (g-CN) materials with interesting properties for e.g. catalysis. A previous electron density study of melamine by synchrotron single crystal X-ray diffraction (SCXRD) at 25 K, lead to a proposed mechanism for the condensation reaction of melamine through melam to g-CN by evaporation of ammonia. The condensation hypothesis is based on structural asymmetry, one amine group in melamine is significantly more pyramidal (like ammonia) than the two other, and thus strongly relies on accurate hydrogen atom positions. Single crystal neutron diffraction experiments could uniquely offer information on especially unambiguous hydrogen positions, anisotropic atomic displacement parameters and possibly anharmonic vibrations, which could validate the conclusions from the SCXRD study. We, furthermore, intend to investigate anharmonic motion as a reaction indicator for the condensation process. This requires accurate determination of structure and anharmonic vibrational parameters of nitrogen and hydrogen at several temperatures, which only neutron diffraction can provide. We apply for 7 days of beamtime at the SXD instrument, allowing us to conduct neutron diffraction experiments at 25, 100, 300 and 400 K.
DOI: 10.34816/ifao.archives.232692
title: SAQQARA_pv_2004_00731

description: Référence : pv_2004_00731<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/6tk-jlw-d4s
title: Orchis variegata All.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/ma7-rsf-yyk
title: Paspalum distichum L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310546
title: Anionic Clustering in Zinc Salt–Concentrated Electrolyte Mixtures

description: Zinc shows great promise either as an alternative or additive to lithium ion batteries due to its low toxicity, low cost and high abundance. Yet if zinc ions are to be utilised in consumer battery materials, it is crucial to understand their solvation environment. This has important consequences for the electrical properties of the resulting electrolyte, and can influence both ion transport and the redox potential - key device properties. Here we propose to use neutron total scattering to determine the solvation structure of Zinc in two bis(trifluoromethanesulfonyl)imide (TFSI)-rich, technologically relevant environments: in a TFSI-based ionic liquid and in the lithium TFSI water-in-salt electrolyte. The zinc-TFSI solvation structure is contested in the literature, but by using total scattering and empirical potential structure refinement we will clarify our understanding of the solvation environment.
DOI: 10.5286/isis.e.rb2310546-1
title: Anionic Clustering in Zinc Salt–Concentrated Electrolyte Mixtures

description: Zinc shows great promise either as an alternative or additive to lithium ion batteries due to its low toxicity, low cost and high abundance. Yet if zinc ions are to be utilised in consumer battery materials, it is crucial to understand their solvation environment. This has important consequences for the electrical properties of the resulting electrolyte, and can influence both ion transport and the redox potential - key device properties. Here we propose to use neutron total scattering to determine the solvation structure of Zinc in two bis(trifluoromethanesulfonyl)imide (TFSI)-rich, technologically relevant environments: in a TFSI-based ionic liquid and in the lithium TFSI water-in-salt electrolyte. The zinc-TFSI solvation structure is contested in the literature, but by using total scattering and empirical potential structure refinement we will clarify our understanding of the solvation environment.
DOI: 10.3535/3m1-c0x-b2n
title: Centaurium erythraea Rafn

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/8s0-br9-2qh
title: Arthraxon hispidus (Thunb.) Makino

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2390163-1
title: FM-Steel Sample Batch 1-1
DOI: 10.5286/isis.e.rb2390164-1
title: FM-Steel Sample Batch 1-2
DOI: 10.5286/isis.e.rb2390165-1
title: FM-Steel Sample Batch 1-3
DOI: 10.15468/dl.jmyr3h
title: Occurrence Download

description: A dataset containing 109 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Helianthemum nummularium (L.) Mill.",
 "Country is Latvia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 109 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109258-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.34816/ifao.archives.232693
title: SAQQARA_pv_2004_00732

description: Référence : pv_2004_00732<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/1qz-xfe-j4l
title: Neotinea ustulata (L.) R.M.Bateman, Pridgeon & M.W.Chase

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/w9q-rse-b57
title: Cyperus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2300050-1
title: CANADIAN: Studying the role of breathing degrees of freedom in the magnetic properties of breathing pyrochlores

description: Breathing pyrochlores exhibit a unique combination of bond alternation and geometrical frustration, which allows them to host exotic phenomena. We propose studying the effect of the breathing ratio (ratio of sizes of Cr tetrahedra) on the magnetic properties of breathing pyrochlores through the study of Ga1.33Cr4S8, which can be synthesized in two polymorphs, breathing, and normal pyrochlore, depending on the synthesis conditions. The breathing phase, α-Ga1.33Cr4S8, shows dominant antiferromagnetic interactions, whereas the normal pyrochlore phase, β-Ga1.33Cr4S8, shows dominant ferromagnetic interaction through the curie-weiss fit of the magnetic susceptibility data. Both compounds show complex magnetism with transitions at 20 K and 30 K in α and β phases, respectively. Neutron diffraction experiments can help us in solving the magnetic structures of these materials and the role of breathing nature in the difference of the properties.
DOI: 10.5286/isis.e.rb2390166-1
title: FM-Steel Sample Batch 1-4
DOI: 10.5286/isis.e.rb2390177-1
title: Structure of Li0.2K0.2NbSe2
DOI: 10.3535/brl-eh7-snt
title: Neotinea commutata (Tod.) R.M.Bateman

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/ywy-8k1-yr7
title: Bassia All.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220069
title: Variable temperature study of the novel superprotonic conductor ZrH5(PO4)3
DOI: 10.5286/isis.e.rb2220069-1
title: Variable temperature study of the novel superprotonic conductor ZrH5(PO4)3
DOI: 10.5286/isis.e.rb2300050
title: CANADIAN: Studying the role of breathing degrees of freedom in the magnetic properties of breathing pyrochlores

description: Breathing pyrochlores exhibit a unique combination of bond alternation and geometrical frustration, which allows them to host exotic phenomena. We propose studying the effect of the breathing ratio (ratio of sizes of Cr tetrahedra) on the magnetic properties of breathing pyrochlores through the study of Ga1.33Cr4S8, which can be synthesized in two polymorphs, breathing, and normal pyrochlore, depending on the synthesis conditions. The breathing phase, α-Ga1.33Cr4S8, shows dominant antiferromagnetic interactions, whereas the normal pyrochlore phase, β-Ga1.33Cr4S8, shows dominant ferromagnetic interaction through the curie-weiss fit of the magnetic susceptibility data. Both compounds show complex magnetism with transitions at 20 K and 30 K in α and β phases, respectively. Neutron diffraction experiments can help us in solving the magnetic structures of these materials and the role of breathing nature in the difference of the properties.
DOI: 10.3535/xx7-2yn-qvy
title: Artemisia L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/z7f-8m1-rl5
title: Apiaceae Lindl.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310663
title: Influence of dopant species and Li-content on the Li-diffusion characteristics of high-Ni LiNiO2 based cathodes for next generation lithium-ion batteries

description: While increasing the Ni content of well-established transition metal layered oxide cathode materials improves the energy density, thermal and cycling stability can be adversely affected. As society pushes towards better performing battery materials for automotive applications, understanding why these instabilities arise and how to mitigate them is essential for the eventual improvement of commercial battery performance. It has been established that highly controlled small quantities of dopants on select atomic sites can act to improve cycling stability and longevity. For example, Mg doped onto the Li site can act as a structural pillar which helps to maintain atomic rigidity as the material when it is highly delithiated, mitigating structural collapse. We have recently developed a suite of doped LNO materials to further understand how the full theoretical capacity of high Ni content cathodes can be realised. We propose to study three variations of a material previously characterised by our group (LiNiO2), namely Mg-doped LNO, dual doped Mg+W-doped LNO, and Li excess LNO. Muon spectroscopy will allow us to elucidate what effect the subtle structural alterations have on the fundamental Li+ diffusion characteristics of each material. Such information will be valuable to understanding how dopants can be used to improve the performance of next-generation battery materials.
DOI: 10.5286/isis.e.rb2310663-1
title: Influence of dopant species and Li-content on the Li-diffusion characteristics of high-Ni LiNiO2 based cathodes for next generation lithium-ion batteries

description: While increasing the Ni content of well-established transition metal layered oxide cathode materials improves the energy density, thermal and cycling stability can be adversely affected. As society pushes towards better performing battery materials for automotive applications, understanding why these instabilities arise and how to mitigate them is essential for the eventual improvement of commercial battery performance. It has been established that highly controlled small quantities of dopants on select atomic sites can act to improve cycling stability and longevity. For example, Mg doped onto the Li site can act as a structural pillar which helps to maintain atomic rigidity as the material when it is highly delithiated, mitigating structural collapse. We have recently developed a suite of doped LNO materials to further understand how the full theoretical capacity of high Ni content cathodes can be realised. We propose to study three variations of a material previously characterised by our group (LiNiO2), namely Mg-doped LNO, dual doped Mg+W-doped LNO, and Li excess LNO. Muon spectroscopy will allow us to elucidate what effect the subtle structural alterations have on the fundamental Li+ diffusion characteristics of each material. Such information will be valuable to understanding how dopants can be used to improve the performance of next-generation battery materials.
DOI: 10.5286/isis.e.rb2390178-1
title: Duplicate Of: Structure of Li0.2Rb0.2NbSe2
DOI: 10.34816/ifao.archives.232694
title: SAQQARA_pv_2004_00733

description: Référence : pv_2004_00733<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/lny-9sj-ppj
title: Zizania aquatica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/q2a-46l-7es
title: Viola L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310600-2
title: Understanding the giant barocaloric effects and thermal hysteresis in Mn3(A,B)N using inelastic neutron scattering

description: Materials with large caloric effects have the potential to play a major role in decarbonising our heating and cooling, which makes up over 20% of the UK’s CO2 emissions. Barocaloric materials have recently shown great promise in usurping conventional hydrocarbon refrigerants. Giant barocaloric effects (BCE) have recently been observed in the geometrically frustrated antiperovskite Mn3GaN at the 1st-order antiferromagnetic transition (TN), enhanced by suppressed spin fluctuations in the ordered phase. Our recent results on the closely related Mn3NiN have revealed yet larger entropy changes, which we interpret as due to differences in the nature of the electronic hybridisation with Mn between the Ni and Ga compounds. In order to understand the underlying mechanisms of the BCE, we have recently performed inelastic neutron scattering and pair distribution function (PDF) experiments on various Mn3AN, the first such experiments on Mn-based antiperovskites. We have found anomalous and A-site dependent phonon temperature dependencies close to TN, which is consistent with our prediction of the different mechanisms that drive this 1st-order transition. To complete our study, we propose to measure these features in Mn3(A,B)N, where not only are BCE large but thermal hysteresis of the transition (highly detrimental to cyclic BCE performance) is an order of magnitude smaller than Mn3AN.
DOI: 10.5286/isis.e.rb2390173-1
title: Neutron Powder Diffraction Measurement of Layered Transition Metal Sodium ion Cathode Material with equal Ni Mn & Fe
DOI: 10.5286/isis.e.rb2390174-1
title: Neutron Powder Diffraction Measurement of Layered Sodium ion Cathode Material with higher nickel content
DOI: 10.3535/fdd-q1j-z7z
title: Bassia All.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2390141-1
title: Analysis and characterisation of synthetic Li minerals
DOI: 10.5286/isis.e.rb2390142-1
title: Analysis and characterisation of synthetic Li minerals - neutron diffraction of LiAlSi2O6