cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.3535/17f-h4t-0e4
title: Cochlearia danica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/6rm-2f9-vsy
title: Festuca Tourn. ex L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410500
title: Possible unconventional magnetism in nematic CsTi3Bi5 kagome supercondutor

description: We propose a zero-field muon spin relaxation investigation of the nematic CsTi3Bi5 kagome superconductor. Nematicity is a ubiquitous feature to many superconductors, such as the cuprates, and it is thought to be a possible drive for the Cooper pairs formation. This kagomè family is also believed to host unconventional magnetism related to a time reversal symmetry breaking (TRSB) phenomenon. This was recently attributed to the presence of loop currents, arising from the formation of a charge density wave state. However, our preliminary spin-resolved photoelectron spectroscopy data from circular dichroism suggest a strong time-reversal symmetry breaking even for CsTi3Bi5, which does not undergo any charge density wave. Here we search for the decisive fingerprint of TRSB in CsTi3Bi5 by exploiting the great sensitivity of muons to low local fields.
DOI: 10.5286/isis.e.rb2410500-1
title: Possible unconventional magnetism in nematic CsTi3Bi5 kagome supercondutor

description: We propose a zero-field muon spin relaxation investigation of the nematic CsTi3Bi5 kagome superconductor. Nematicity is a ubiquitous feature to many superconductors, such as the cuprates, and it is thought to be a possible drive for the Cooper pairs formation. This kagomè family is also believed to host unconventional magnetism related to a time reversal symmetry breaking (TRSB) phenomenon. This was recently attributed to the presence of loop currents, arising from the formation of a charge density wave state. However, our preliminary spin-resolved photoelectron spectroscopy data from circular dichroism suggest a strong time-reversal symmetry breaking even for CsTi3Bi5, which does not undergo any charge density wave. Here we search for the decisive fingerprint of TRSB in CsTi3Bi5 by exploiting the great sensitivity of muons to low local fields.
DOI: 10.34816/ifao.archives.232765
title: SAQQARA_nb_1994_03259

description: Référence : nb_1994_03259<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/2b9-0a8-409
title: Polygala L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/5ya-2kh-xgw
title: Mycelis muralis (L.) Dumort.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410053
title: SHINING THE BEAM ON EGYPTIAN MUMMIES IN MAPS - EFFECTS OF FIRE ON THE EGYPTIAN COLLECTION OF THE NATIONAL MUSEUM-BRAZIL

description: Inelastic neutron scattering spectroscopy in MAPS will be applied to analyse skeletal remains from mummies of the Egyptian Collection of the brazilian National Museum, which were damaged by fire in 2018. 4 different mummies will be probed, including a particularly interesting one from the Roman Period due to its specific mummification process (1 among 7 worldwide). Based on the team´s previous expertise in the analysis of burned human bones by vibrational spectroscopy, the present results are expected to deliver the burning conditions, and to determine the impact of the mummification process on the heat-induced effects in bone. Understanding how fire affected these mummified bones is a crucial step for the preservation of the Museum´s collection. This is a pioneer neutron study on mummified human bones subjected to burning.
DOI: 10.5286/isis.e.rb2410053-1
title: SHINING THE BEAM ON EGYPTIAN MUMMIES IN MAPS - EFFECTS OF FIRE ON THE EGYPTIAN COLLECTION OF THE NATIONAL MUSEUM-BRAZIL

description: Inelastic neutron scattering spectroscopy in MAPS will be applied to analyse skeletal remains from mummies of the Egyptian Collection of the brazilian National Museum, which were damaged by fire in 2018. 4 different mummies will be probed, including a particularly interesting one from the Roman Period due to its specific mummification process (1 among 7 worldwide). Based on the team´s previous expertise in the analysis of burned human bones by vibrational spectroscopy, the present results are expected to deliver the burning conditions, and to determine the impact of the mummification process on the heat-induced effects in bone. Understanding how fire affected these mummified bones is a crucial step for the preservation of the Museum´s collection. This is a pioneer neutron study on mummified human bones subjected to burning.
DOI: 10.5286/isis.e.rb2410453-1
title: Probing ion structure and correlation in tetrabutylphosphonium tetra(pyrazolato)borate

description: Tetrabutylphosphonium tetra(pyrazolato)borate is under investigation as an example of an organic ionic plastic crystalline material containing novel N-coordinated borate anions and is of interest as a prototype for non-fluorous plastic crystal and ionic liquid electrolytes for electrochemical cells. This proposal will examine the origins of differences between cation and anion mobility across the plastic crystal and liquid phase regions of this materials (from ~rt-70 C) that have been observed from multinuclear ssNMR spectroscopy.
DOI: 10.3535/fqg-a4t-6dk
title: Dryas octopetala L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/zlt-ccs-f2v
title: Salix aurita L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410186
title: Possible quantum spin liquid phase in the S=1/2 frustrated cubic lattice Y3Cu2Sb3O14

description: We have identified a new Cu-based system, Y3Cu2Sb3O14 which appears to have a geometrically frustrated 3D network of S=1/2 Cu2+ ions. Our measurements suggest a lack of magnetic order down to 2 K in Y3Cu2Sb3O14 in spite of an antiferromagnetic Curie Weiss temperature, θCW = -17.6 K. For temperatures above 2 K, our ac susceptibility, and magnetization data obey temperature-magnetic field scaling, indicative of the formation of 3D random singlets/ Quantum spin liquids (QSL) phase. Through μSR, we propose to explore the spin dynamics at low T in the above compound to look for evidence of QSL behavior. We propose zero-field and longitudinal-field μSR measurements in the temperature range of 50 mK to 100 K to achieve our objectives.
DOI: 10.5286/isis.e.rb2410186-1
title: Possible quantum spin liquid phase in the S=1/2 frustrated cubic lattice Y3Cu2Sb3O14

description: We have identified a new Cu-based system, Y3Cu2Sb3O14 which appears to have a geometrically frustrated 3D network of S=1/2 Cu2+ ions. Our measurements suggest a lack of magnetic order down to 2 K in Y3Cu2Sb3O14 in spite of an antiferromagnetic Curie Weiss temperature, θCW = -17.6 K. For temperatures above 2 K, our ac susceptibility, and magnetization data obey temperature-magnetic field scaling, indicative of the formation of 3D random singlets/ Quantum spin liquids (QSL) phase. Through μSR, we propose to explore the spin dynamics at low T in the above compound to look for evidence of QSL behavior. We propose zero-field and longitudinal-field μSR measurements in the temperature range of 50 mK to 100 K to achieve our objectives.
DOI: 10.5286/isis.e.rb2410453
title: Probing ion structure and correlation in tetrabutylphosphonium tetra(pyrazolato)borate

description: Tetrabutylphosphonium tetra(pyrazolato)borate is under investigation as an example of an organic ionic plastic crystalline material containing novel N-coordinated borate anions and is of interest as a prototype for non-fluorous plastic crystal and ionic liquid electrolytes for electrochemical cells. This proposal will examine the origins of differences between cation and anion mobility across the plastic crystal and liquid phase regions of this materials (from ~rt-70 C) that have been observed from multinuclear ssNMR spectroscopy.
DOI: 10.34816/ifao.archives.232766
title: SAQQARA_nb_1994_03260

description: Référence : nb_1994_03260<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/6q8-lkz-e8w
title: Carex flava L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310105
title: Novel ground state in the frustrated S=1 tetramer antiferromagnet K2Ni2(MoO4)3

description: Quantum materials wherein frustration, the topology of the electronic band structure, spin correlations, and subtle interplay between emergent degrees of freedom are at play can host a panoply of novel quantum states spanning from spin liquids to Bose-Einstein Condensation with exotic fractionalized excitations. Herein, we focus on a new frustrated antiferromagnet K2Ni2(MoO4)3 in which Ni2+ ions constitute a tetramer. The magnetic susceptibility and specific heat on the single crystal and polycrystal exhibit short-range spin correlations without a gap in the spin excitation spectrum. The presence of a sharp peak at around ~ 1.1 K in magnetization and specific results suggest the presence of long range magnetic order. Remarkably, the external magnetic field induces magnetic phenomena akin to the BEC of triplon excitations in spin gap magnets. T-H phase boundary follows a power law (T-T_N)∝H^(2/3) as predicted for the BEC scenario. Our thermodynamic results suggest the titled material is located in the proximity of a quantum critical point (QCP), which separates the magnetically ordered and spin-gap regions of the phase diagram. We propose a μSR study much below the sub-Kelvin temperatures to unambiguously confirm the BEC state, extract the relevant order parameter, and critical exponents essential to establish universality class in BEC of magnetic excitations in this novel frustrated antiferromagnet.
DOI: 10.5286/isis.e.rb2310105-1
title: Novel ground state in the frustrated S=1 tetramer antiferromagnet K2Ni2(MoO4)3

description: Quantum materials wherein frustration, the topology of the electronic band structure, spin correlations, and subtle interplay between emergent degrees of freedom are at play can host a panoply of novel quantum states spanning from spin liquids to Bose-Einstein Condensation with exotic fractionalized excitations. Herein, we focus on a new frustrated antiferromagnet K2Ni2(MoO4)3 in which Ni2+ ions constitute a tetramer. The magnetic susceptibility and specific heat on the single crystal and polycrystal exhibit short-range spin correlations without a gap in the spin excitation spectrum. The presence of a sharp peak at around ~ 1.1 K in magnetization and specific results suggest the presence of long range magnetic order. Remarkably, the external magnetic field induces magnetic phenomena akin to the BEC of triplon excitations in spin gap magnets. T-H phase boundary follows a power law (T-T_N)∝H^(2/3) as predicted for the BEC scenario. Our thermodynamic results suggest the titled material is located in the proximity of a quantum critical point (QCP), which separates the magnetically ordered and spin-gap regions of the phase diagram. We propose a μSR study much below the sub-Kelvin temperatures to unambiguously confirm the BEC state, extract the relevant order parameter, and critical exponents essential to establish universality class in BEC of magnetic excitations in this novel frustrated antiferromagnet.
DOI: 10.5286/isis.e.rb2320101-2
title: Using neutron reflectometry to understand enhanced dynamic linewidth in a magnetic trilayer device (continuation)

description: We have studied magnetic damping of CoFe/Ag/CoFe multilayer films using ferromagnetic resonance spectroscopy. There is an anomalous linewidth enhancement, which oscillates with a period of around 1 nm as the Ag thickness is increased. Theoretical studies predict dynamic exchange coupling across non-magnetic spacers to affect the resonance linewidth; the enhanced damping in CoFe/Ag/CoFe may rely on the interlayer coupling which may be ferromagnetic or antiferromagnetic due to the well-known Ruderman-Kittel-Kasuya-Yosida (RKKY) mechanism. Our previous experiment found uniaxial magnetic anisotropy (UMA) may also play a role. The aim of this experiment is to determine the UMA and RKKY coupling strengths from depth-resolved vector magnetometry using polarised neutron reflectometry with polarisation analysis, to clarify interpretation of the anomalous linewidth behaviour in CoFe/Ag/CoFe.
DOI: 10.15468/dl.w6nagm
title: Occurrence Download

description: A dataset containing 15375 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Scaevola taccada (Gaertn.) Roxb."
 ]
}

 The dataset includes 15375 records from 234 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0109269-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.3535/9kp-5rt-1p7
title: Pedicularis sylvatica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/cm7-h47-paf
title: Ceratocapnos claviculata (L.) Lidén

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410032
title: Mixing in non-fullerene acceptor (NFA)/polymer blends; Understanding equilibrium and non-equilibrium behaviour

description: Despite rapid increases in efficiency over the last five years or so, organic photovoltaics (OPVs) fabricated using non-fullerene electron acceptors (NFAs), face challenges to commercialisation due to efficiency reduction during use. A key aspect of this is the evolution of morphology and interfacial structure during operation; eg changes to the volumes, compositions and connectivity of mixed acceptor/donor phases (domains) at elevated temperatures. In recent years, we have developed a methodology, using in-situ neutron reflectometry, to explore phase composition, phase volume and interfacial width during thermal annealing in model fullerene/polymer thin-film samples, and examine their behaviour within the framework of equilibrium theories (Flory-Huggins, self-consistent field-theory). We now seek to apply this to recently developed NFA/polymer systems, and thoroughly evaluate key aspects of equilibrium behaviour; i) convergence to a global minimum from different starting points, ii) (thermal) reversibility and iii) MW dependence. The aim of our study is to complement device-optimisation and stability strategies in these commercially-relevant materials, by thoroughly investigating fundamental behaviour in model thin-film bilayers.
DOI: 10.5286/isis.e.rb2410032-1
title: Mixing in non-fullerene acceptor (NFA)/polymer blends; Understanding equilibrium and non-equilibrium behaviour

description: Despite rapid increases in efficiency over the last five years or so, organic photovoltaics (OPVs) fabricated using non-fullerene electron acceptors (NFAs), face challenges to commercialisation due to efficiency reduction during use. A key aspect of this is the evolution of morphology and interfacial structure during operation; eg changes to the volumes, compositions and connectivity of mixed acceptor/donor phases (domains) at elevated temperatures. In recent years, we have developed a methodology, using in-situ neutron reflectometry, to explore phase composition, phase volume and interfacial width during thermal annealing in model fullerene/polymer thin-film samples, and examine their behaviour within the framework of equilibrium theories (Flory-Huggins, self-consistent field-theory). We now seek to apply this to recently developed NFA/polymer systems, and thoroughly evaluate key aspects of equilibrium behaviour; i) convergence to a global minimum from different starting points, ii) (thermal) reversibility and iii) MW dependence. The aim of our study is to complement device-optimisation and stability strategies in these commercially-relevant materials, by thoroughly investigating fundamental behaviour in model thin-film bilayers.
DOI: 10.5286/isis.e.rb2490120-1
title: Magnetic excitations of newly-grown trimer-based antiferromagnet
DOI: 10.3535/55g-xmq-f7e
title: Trifolium repens L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/saf-jhv-95k
title: Lysimachia minima (L.) U. Manns & Anderb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410339-1
title: Influence of stoichiometry on the local magnetism in Fe_{d}TaS2

description: Transition metal dichalcogenides (TMDCs) are a class of material that exhibit diverse properties such as superconductivity, charge density waves, and several types of magnetism. Intercalated TMDCs of the form M_{d}XS2, where M is a 3d metal, have been of particular interest when the intercalant concentration reaches a critical value of d=1/3. Above this threshold the system becomes noncentrosymmetric and therefore able to host topological magnetic excitations. Here we propose to study the influence of stoichiometry in the system Fe_{d}TaS2, for d=0.15, 0.26 and 0.46. We will probe the evolution of the magnetic interactions, phase transitions and dynamics from a local perspective. This project forms part of a wider project using muSR and DFT to probe this series of TMDCs.
DOI: 10.5286/isis.e.rb2490145-1
title: Ascertaining the 16-fold superstructure of the Bi-rich perovskite (Bi3Na)(Na2Te2)O12
DOI: 10.34816/ifao.archives.232767
title: SAQQARA_nb_1994_03261

description: Référence : nb_1994_03261<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/v2b-qfw-21y
title: Carex pulicaris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/ykd-ae0-na6
title: Poa humilis Ehrh. ex Hoffm.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410159
title: Searching for topological spin textures in a noncentrosymmetric antiferromagnet

description: Topological spin textures (TSTs) such as magnetic skyrmion have attracted a lots of attentions. The search of TSTs in f-electron systems have led to quite some new discoveries, in particular in some Eu- and Gd- based compounds. We have grown high-quality single crystal and polycrystalline samples of EuPtAs with a tetragonal polar structure, and have constructed the field--temperature phase diagram. One of the field-induced phase (phase III) show evidence of topological Hall effect. The zero field magnetic stucture is refined to be a cyclodial structure. Here we propose to measure single crystal neutron diffraction at WISH, with magnetic fields applied along the c-axis, to check if there is TST inside phase III, and to map the evolution of the magnetic structure with field.
DOI: 10.5286/isis.e.rb2410159-1
title: Searching for topological spin textures in a noncentrosymmetric antiferromagnet

description: Topological spin textures (TSTs) such as magnetic skyrmion have attracted a lots of attentions. The search of TSTs in f-electron systems have led to quite some new discoveries, in particular in some Eu- and Gd- based compounds. We have grown high-quality single crystal and polycrystalline samples of EuPtAs with a tetragonal polar structure, and have constructed the field--temperature phase diagram. One of the field-induced phase (phase III) show evidence of topological Hall effect. The zero field magnetic stucture is refined to be a cyclodial structure. Here we propose to measure single crystal neutron diffraction at WISH, with magnetic fields applied along the c-axis, to check if there is TST inside phase III, and to map the evolution of the magnetic structure with field.
DOI: 10.5286/isis.e.rb2410339
title: Influence of stoichiometry on the local magnetism in Fe_{d}TaS2

description: Transition metal dichalcogenides (TMDCs) are a class of material that exhibit diverse properties such as superconductivity, charge density waves, and several types of magnetism. Intercalated TMDCs of the form M_{d}XS2, where M is a 3d metal, have been of particular interest when the intercalant concentration reaches a critical value of d=1/3. Above this threshold the system becomes noncentrosymmetric and therefore able to host topological magnetic excitations. Here we propose to study the influence of stoichiometry in the system Fe_{d}TaS2, for d=0.15, 0.26 and 0.46. We will probe the evolution of the magnetic interactions, phase transitions and dynamics from a local perspective. This project forms part of a wider project using muSR and DFT to probe this series of TMDCs.
DOI: 10.5286/isis.e.rb2410694-3
title: Determining the structure of confined supercapacitor electrolytes

description: As electrochemical energy storage devices, electrical double layer (EDL) supercapacitors complement batteries since they are capable of substantially higher power densities. Energy in EDL supercapacitors is stored in the “double layer” of adsorbed ions on high surface area charged electrodes. However, despite its immense importance, the structure of EDL has never been measured in atomistic detail due to a lack of suitable methods. As a result, realistic predictive models for supercapacitors are notoriously absent. To address this, and as a first step towards developing operando studies of supercapacitor electrolyte structure, we will use NIMROD to study the structure of two supercapacitor electrolytes in the bulk and confined in a mesoporous carbon. We will use the power of neutrons to an utilise isotopic H/D substitution, and complimentary data refined simulation analysis, to reveal, in atomistic detail, how the structure of these important liquids changes in the presence of carbon electrode surfaces.
DOI: 10.3535/8qn-6jn-7x5
title: Carex paniculata L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/mrx-ma4-c8m
title: Fumaria L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410424
title: Effect of microstructure and punching method on residual stress formation of punched thick-plate advanced high-strength steels

description: Advanced high-strength steels (AHSSs) represent a promising advancement in materials for the automotive industry due to their exceptional combination of strength, ductility, and formability, offering a compelling alternative to conventional high-strength low-alloy (HSLA) steels. AHSSs, with a higher strength-to-weight ratio than that of HSLA, allow for the design of thinner gauges, resulting in substantial weight reduction and consequent fuel savings. However, applying AHSSs in the thick-plate configuration for heavy-duty trucks remains a challenging endeavor. This challenge stems from the sheet shearing processes required to manufacture chassis components, such as hole punching and trimming. 
These processes more adversely affect the fatigue properties of AHSSs compared to conventional HSLA steels due to introducing a rougher surface inside the punch, as well as a more pronounced shear-affected zone, and particularly higher residual stress accumulation around the punched area. Consequently, heavy-duty trucks still predominantly rely on conventional HSLA steels, and the full potential of AHSSs remains unrealized in these applications. To address this limitation and optimize the integration of AHSS steels in heavy-duty trucks, a comprehensive understanding of punching effect on fatigue behavior is essential. This study aims to particularly focus on quantifying the residual stress resulting from punching in AHSSs with different microstructures and hole geometries.