A5008685650- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Physics of Superconductivity and Magnetism
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Advanced Thermoelectric Materials and Devices
- Ferroelectric and Piezoelectric Materials
- Advanced Chemical Physics Studies
- Multiferroics and related materials
- Atomic and Molecular Physics
- High-pressure geophysics and materials
- Thermal properties of materials
- Quantum, superfluid, helium dynamics
- Material Dynamics and Properties
- Magnetic properties of thin films
- Atomic and Subatomic Physics Research
- Solid-state spectroscopy and crystallography
- Nuclear Physics and Applications
- Thermal Expansion and Ionic Conductivity
- Spectroscopy and Quantum Chemical Studies
- Glass properties and applications
- Rare-earth and actinide compounds
- Topological Materials and Phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Metallic Glasses and Amorphous Alloys
Australian Nuclear Science and Technology Organisation
2016-2025
University of Toyama
2020
Lucas Research
2019
The University of Melbourne
2016
Wuhan Institute of Technology
2015
UNSW Sydney
2010
Paul Scherrer Institute
2010
Commonwealth Scientific and Industrial Research Organisation
2010
ETH Zurich
2010
University of Münster
2003-2007
Thermoelectric materials can realize direct conversion between heat and electricity, showing excellent potential for waste recovery. Cu
Abstract With the gradual promotion of new energy technologies, there is a growing demand for capacitors with high storage density, operating temperature, voltage, and good temperature stability. In recent years, researchers have been devoted to improving properties lead‐based, titanium‐based, iron‐based multilayer ceramic (MLCCs). However, limited research has conducted into MLCC development using NaNbO 3 (NN)‐based materials. this paper, successful achievement excellent overall performance...
We use neutron scattering to show that ferromagnetic (FM) phase transition in the two-dimensional (2D) honeycomb lattice ${\mathrm{CrI}}_{3}$ is a weakly first order and controlled by spin-orbit coupling (SOC) induced magnetic anisotropy, instead of exchange as conventional ferromagnet. With increasing temperature, magnitude seen spin gap at Brillouin zone center, decreases power law fashion vanishes ${T}_{C}$, while in-plane $c$-axis spin-wave stiffnesses associated with couplings remain...
Solid-state refrigeration based on caloric effects is an energetically efficient and environmentally friendly technology, which deemed as a potential alternative to the conventional vapor-compression technology. One of greatest obstacles real application huge driving fields. Here, we report giant barocaloric effect in inorganic NH4I with maximum entropy changes {\Delta}S_BCE^max ~89 J K-1 kg-1 around room temperature, associated orientationally order-disorder phase transition. The transition...
Cobaltates with $3d$ based layered honeycomb structure were recently proposed as Kitaev magnets and putative candidates to host the long-sought spin liquid. Here we present inelastic neutron scattering results down 50 mK for powder samples of ${\mathrm{Na}}_{3}{\mathrm{Co}}_{2}{\mathrm{SbO}}_{6}$ ${\mathrm{Na}}_{2}{\mathrm{Co}}_{2}{\mathrm{TeO}}_{6}$, high resolution in regions low momentum energy transfers. We compare experimental data below antiferromagnetic zigzag ordering temperature...
To harvest and reuse low-temperature waste heat, we propose realize an emergent concept—barocaloric thermal batteries based on the large inverse barocaloric effect of ammonium thiocyanate (NH 4 SCN). Thermal charging is initialized upon pressurization through order-to-disorder phase transition, discharging 43 J g −1 takes place at depressurization, which 11 times more than input mechanical energy. The thermodynamic equilibrium nature pressure-restrained heat-carrying guarantees stable...
The creation of a high-pressure rhombohedral phase leads to colossal barocaloric effect in KPF 6 .
The combination of a geometrically frustrated lattice, and similar energy scales between degrees freedom endows two-dimensional Kagome metals with rich array quantum phases renders them ideal for studying strong electron correlations band topology. metal, FeGe is noted example this, exhibiting A-type collinear antiferromagnetic (AFM) order at TN ≈ 400 K, then establishes charge density wave (CDW) phase coupled AFM ordered moment below TCDW 110 finally forms c-axis double cone structure...
Pelican, a direct-geometry multi-purpose cold-neutron spectrometer, combines state-of-the-art monochromators and Fermi chopper systems to perform inelastic quasi-elastic neutron scattering on variety of materials (powder, polycrystal, single crystal, glass liquid), covering fields physics, chemistry biology. The provision cryogenic vacuum from sample detector decreases background minimum level. A polarized incident beam is realized by supermirror polarizer polarization analysis will be...
Simple fabrication of a ferrite-based bulk soft magnet (NiFe<sub>2</sub>O<sub>4</sub>) and hard (BaFe<sub>12</sub>O<sub>19</sub>) using the extrusion free-forming process.
The lattice dynamics and thermal transport in Cu2-δSe compounds were investigated via theoretical calculations, neutron measurement, characterization of properties. results show that binary ordered has an extremely low conductivity at temperatures. energy multi-Einstein optic modes are the dominant approach obtaining such conductivity. It is indicated damped vibrations copper ions could contribute to modes, especially for those branches 2–4 meV.
Abstract Observation of a quantum spin liquid (QSL) state is one the most important goals in condensed-matter physics, as well development new spintronic devices that support next-generation industries. The QSL two dimensional systems expected to be due geometrical magnetic frustration, and thus kagome-based lattice probable playground for QSL. Here, we report first experimental results on square-kagome antiferromagnet, KCu 6 AlBiO 4 (SO ) 5 Cl. Comprehensive studies via susceptibility,...
Explosive energy conversion materials with extremely rapid response times have broad and growing applications in energy, medical, defense, mining areas. Research into the underlying mechanisms search for new candidate this field are so limited that environment-unfriendly Pb(Zr,Ti)O3 still dominates after half a century. Here, we report discovery of previously undiscovered, lead-free (Ag0.935K0.065)NbO3 material, which possesses record-high storage density 5.401 J/g, enabling pulse current ~...
An analytical model describing the vibrational density of states (VDOS) liquids has long been elusive, owing to complexities liquid dynamics. Nevertheless, Zaccone and Baggioli have recently developed such a which was proposed be universal law for liquids. Distinct from Debye law, g(ω) ∝ ω2, solids, reveals linear relationship, ω, in low-energy region. We confirmed this with experimental VDOS measured by inelastic neutron scattering on real systems including water, metal, polymer liquids,...
Water confined within carbon nanotubes (CNT) exhibits tremendous enhanced transport properties. Here, we extend this result to ionic liquids (IL) in vertically aligned CNT membranes. Under confinement, the IL self-diffusion coefficient is increased by a factor 3 compared its bulk reference. This could lead high power battery separators.
Inelastic neutron scattering (INS) has been used to investigate the crystal field (CF) magnetic excitations of analogs most representative lanthanoid–polyoxometalate single-molecule magnet family: Na9[Ln(W5O18)2] (Ln = Nd, Tb, Ho, Er). Ab initio complete active space self-consistent field/restricted state interaction calculations, extended also Dy analog, show good agreement with experimentally determined low-lying CF levels, accuracy better in cases than that reported for approaches based...