A5044227001- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Multiferroics and related materials
- Rare-earth and actinide compounds
- Thermal Expansion and Ionic Conductivity
- Physics of Superconductivity and Magnetism
- Iron-based superconductors research
- Topological Materials and Phenomena
- Crystal Structures and Properties
- Magnetic properties of thin films
- Advanced Battery Materials and Technologies
- Magnetic Properties of Alloys
- Ferroelectric and Piezoelectric Materials
- Inorganic Chemistry and Materials
- Advancements in Battery Materials
- High-pressure geophysics and materials
- Heusler alloys: electronic and magnetic properties
- Perovskite Materials and Applications
- Microwave Dielectric Ceramics Synthesis
- Electronic and Structural Properties of Oxides
- Thermal properties of materials
- Nuclear materials and radiation effects
- Shape Memory Alloy Transformations
Oak Ridge National Laboratory
2014-2025
China Aluminum International Engineering Corporation Limited (China)
2025
North China Electric Power University
2023-2025
University of Shanghai for Science and Technology
2025
Harbin Normal University
2011-2024
Chinese Academy of Sciences
2009-2024
Shanghai Institute of Applied Physics
2023-2024
Lawrence Berkeley National Laboratory
2024
Infrastructure University Kuala Lumpur
2024
Hohai University
2024
All-solid-state Li-ion batteries (ASSBs), considered to be potential next-generation energy storage devices, require solid electrolytes (SEs). Thiophosphate-based materials are popular, but these sulfides exhibit poor anodic stability and specialty coatings on lithium metal oxide cathodes. Moreover, electrode designs aimed at high density limited by their narrow electrochemical window. Here, we report new mixed-metal halide Li3–xM1–xZrxCl6 (M = Y, Er) SEs with ionic conductivity—up 1.4 mS...
We report on a new family of argyrodite lithium superionic conductors, as solid solutions Li6+xMxSb1-xS5I (M = Si, Ge, Sn), that exhibit conductivity. These represent the first antimony argyrodites to date. Exploration series using combination single crystal X-ray and synchrotron/neutron powder diffraction, combined with impedance spectroscopy, reveals an optimal degree substitution (x), substituent induces slight S2-/I- anion site disorder-but more importantly drives Li+ cation disorder....
Millimeter-sized ${\mathrm{MnBi}}_{2}{\mathrm{Te}}_{4}$ single crystals are grown out of a Bi-Te flux and characterized using magnetic, transport, scanning tunneling microscopy, spectroscopy measurements. The magnetic structure below ${T}_{N}$ is determined by powder single-crystal neutron diffraction Below = 24 K, ${\mathrm{Mn}}^{2+}$ moments order ferromagnetically in the $ab$ plane but antiferromagnetically along crystallographic $c$ axis. ordered moment...
A new disordered chlorospinel superionic conductor, Li<sub>2</sub>Sc<sub>2/3</sub>Cl<sub>4</sub>, enables high-voltage all solid state batteries up to 4.6 V <italic>vs.</italic> Li<sup>+</sup>/Li.
We report two new families of lithium metal chloride solid electrolytes Li3–xZrx(M)1–xCl6 (0 ≤ x 0.8; M = Ho or Lu) with ionic conductivities up to 1.8 mS cm–1 and a low activation energy 0.34 eV. Structural elucidation via high-resolution neutron diffraction determines the Li ion distribution in trigonal Li3HoCl6, orthorhombic-I Li3LuCl6, orthorhombic-II Li2.4Zr0.6(Ho/Lu)0.4Cl6. The last compound exhibits well-connected Li-ion pathways abundant carriers/vacancies promote diffusion....
Abstract In this article, we recall the United Nations’ 30-year journey in disaster risk reduction strategy and framework, review latest progress key scientific technological questions related to Nations initiatives, summarize framework contents of science research. The object research is “disaster system” consisting hazard, geographical environment, exposed units, with features regionality, interconnectedness, coupling, complexity. Environmental stability, hazard threat, socioeconomic...
Abstract Complex behavior poses challenges in extracting models from experiment. An example is spin liquid formation frustrated magnets like Dy 2 Ti O 7 . Understanding has been hindered by issues including disorder, glass formation, and interpretation of scattering data. Here, we use an automated capability to extract model Hamiltonians data, identify different magnetic regimes. This involves training autoencoder learn a compressed representation three-dimensional diffuse scattering, over...
Abstract Predicting magnetic ordering in kagome compounds offers the possibility of harnessing topological or flat-band physical properties through tuning magnetism. Here, we examine interactions and phases ErMn 6 Sn which belongs to a family R Mn , = Sc, Y, Gd–Lu, with layers, triangular signatures properties. Using results from single-crystal neutron diffraction mean-field analysis, find that sits close critical boundary separating spiral-magnetic ferrimagnetic ordered states typical for...
The magnetocaloric effect and refrigeration capacity (RC) of Gd55Co20Al25 Gd55Ni25Al20 bulk metallic glasses (BMGs) have been investigated. Large magnetic entropy changes ΔSM 11.2 10.8 J kg−1 K−1 large RC values 846 920 are obtained for Gd55Ni25Al20, respectively, at a field change 7 T. value (640 5 T or T) BMG is larger than that reported all materials, including crystalline amorphous materials measured under the same conditions. due to broad peak (more 100 K), which caused by disordered...
The magnetic phase transitions and the magnetocaloric effect in Ising antiferromagnet DySb have been studied. A field-induced sign change of has observed which is related to a first-order metamagnetic transition from antiferromagnetic ferromagnetic states at/below Néel temperature TN, while negative entropy found be associated with paramagnetic above TN. large magnetic-entropy (−20.6J∕kgK at 11K for field 7T), together small hysteresis, suggests that could potential material refrigeration...
The spinel FeV${}_{2}$O${}_{4}$ is known to exhibit peculiar physical properties, which generally ascribed the unusual presence of two cations showing a pronounced interplay between spin, orbital, and lattice degrees freedom (Fe${}^{2+}$ V${}^{3+}$ on tetrahedral octahedral sites, respectively). present work reports an experimental reinvestigation this material based broad combination techniques, including x-ray diffraction, energy dispersive, M\"ossbauer spectroscopies, as well...
We report on a family of lithium fast ion conductors, Li3+x[SixP1–x]S4, that exhibit an entropically stabilized structure type in solid solution regime (0.15 < x 0.33) with superionic conductivity above 1 mS·cm–1. Exploration the influence aliovalent substitution thermodynamically unstable β-Li3PS4 lattice using combination single crystal X-ray and powder neutron diffraction, maximum entropy method, impedance spectroscopy reveals induces structural splitting localized Li sites, effectively...
The $\mathrm{Mn}{({\mathrm{Bi}}_{1\ensuremath{-}x}{\mathrm{Sb}}_{x})}_{2}{\mathrm{Te}}_{4}$ series is purported to span from an antiferromagnetic (AF) topological insulator at $x=0$ a trivial AF $x=1$. Here we report on neutron diffraction and inelastic scattering studies of the magnetic interactions across this series. All compounds measured possess ferromagnetic (FM) triangular layers find crossover FM interlayer coupling near $x=1$ for our samples. large spin gap closes rapidly average...
Super Invar (SIV), i.e., zero thermal expansion of metallic materials underpinned by magnetic ordering, is great practical merit for a wide range high precision engineering. However, the relatively narrow temperature window SIV in most restricts its potential applications many critical fields. Here, we demonstrate controlled design family ${R}_{2}{(\mathrm{Fe},\mathrm{Co})}_{17}$ ($R=\text{rare}$ Earth). We find that adjusting Fe-Co content tunes behavior and optimization leads to...
The compound Ho2In exhibits two successive magnetic phase transitions: a spin-reorientation transition at TSR=32 K and magnetic-ordering TC=85 K. maximum reversible −ΔSM values are 6.3 11.2 J/kg TSR TC, respectively, for field change of 5 T. These peaks with the same sign partly overlapping, which results in wide temperature interval appreciable magnetocaloric effect. on indicate that materials SR transitions may constitute an important new class refrigerants since they work wider range than...
A large reversible magnetocaloric effect has been observed in Tb3Co compound. Under a magnetic field change of 5T, the maximum value entropy ΔSM is −18Jkg−1K−1 at 84K and relative cooling power 738Jkg−1 with no hysteresis loss. In particular, ΔSMmax, −8.5Jkg−1K−1, achieved for low 2T. The anisotropy texture material greatly affect ΔSM. (both high power) indicates that could be promising candidate refrigeration.
Abstract. The influence of global warming on soil organic matter (SOM) dynamics in terrestrial ecosystems remains unclear. In this study, we combined fractionation with isotope analyses to examine SOM after nine years experimental a North America tallgrass prairie. Soil samples from the control plots and warmed were separated into four aggregate sizes (>2000 μm, 250–2000 53–250 <53 μm), three density fractions (free light fraction – LF, intra-aggregate particulate iPOM,...
A solid with larger sound speeds usually exhibits higher lattice thermal conductivity. Here, we report an exception that CuP2 has a quite large mean speed of 4155 m s-1, comparable to GaAs, but single crystals show very low conductivity about 4 W m-1 K-1 at room temperature, one order magnitude smaller than GaAs. To understand such puzzling transport behavior, have thoroughly investigated the atomic structures and dynamics by combining neutron scattering techniques first-principles...
Understanding the magnetism and its possible correlations to topological properties has emerged as a forefront difficult topic in studying magnetic Weyl semimetals. Co$_{3}$Sn$_{2}$S$_{2}$ is newly discovered semimetal with kagome lattice of cobalt ions triggered intense interest for rich fantastic phenomena. Here, we report exchange couplings using inelastic neutron scattering two density functional theory (DFT) based methods: constrained multiple-scattering Green's function methods....
Driven by numerous discoveries of novel physical properties and integration into functional devices, interest in one-dimensional (1D) magnetic nanostructures has grown tremendously. Traditionally, such structures are accessed with bottom-up techniques, but these require increasing sophistication to allow precise control over crystallinity, branching, aspect ratio, surface termination, especially when approaching the subnanometer regime phases. Here, we show that mechanical exfoliation bulk...