A5008944159- Heusler alloys: electronic and magnetic properties
- Shape Memory Alloy Transformations
- Magnetic and transport properties of perovskites and related materials
- Magnetic properties of thin films
- MXene and MAX Phase Materials
- Magnetic Properties and Applications
- Magnetic Properties of Alloys
- Advanced Welding Techniques Analysis
- 2D Materials and Applications
- Intermetallics and Advanced Alloy Properties
- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- Rare-earth and actinide compounds
- Advanced Thermoelectric Materials and Devices
- Topological Materials and Phenomena
- Quantum and electron transport phenomena
- Theoretical and Computational Physics
- Creativity in Education and Neuroscience
- Thermal Expansion and Ionic Conductivity
- Iron-based superconductors research
- Piezoelectric Actuators and Control
- Superconductivity in MgB2 and Alloys
- Polymer-Based Agricultural Enhancements
- Solidification and crystal growth phenomena
- High Entropy Alloys Studies
Xihua University
2025
University of Science and Technology Beijing
2015-2024
Guangdong Laboratory Animals Monitoring Institute
2016-2022
Chinese Academy of Sciences
2003-2016
South China Sea Institute Of Oceanology
2016
The University of Western Australia
2008-2010
Institute of Physics
2001-2006
University of Amsterdam
2004
We report on structural, magnetic, transport, and spin-polarization measurements of the Heusler alloys ${\mathrm{Co}}_{2}\mathrm{MnSi}$ NiMnSb. Laue diffraction patterns confirm single-crystal nature ${\mathrm{Co}}_{2}\mathrm{MnSi}.$ Room-temperature transport show a negative magnetoresistance in Point-contact Andreev reflection spin polarization yield values for NiMnSb 56% 45%, respectively. Temperature dependence resistivity reveals relatively large residual ratio...
In this Brief Report, we report on the observation of a giant positive (inverse) magnetic entropy change (about $28.6\phantom{\rule{0.3em}{0ex}}\mathrm{J}\phantom{\rule{0.2em}{0ex}}{\mathrm{K}}^{\ensuremath{-}1}\phantom{\rule{0.2em}{0ex}}{\mathrm{kg}}^{\ensuremath{-}1}$ at $5\phantom{\rule{0.3em}{0ex}}\mathrm{T}$ field) below $300\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ and modest negative (normal)...
The site-preference rule (SPR), which is widely used to design and study the properties of full-Heusler alloys X2YZ, applied determine positions different transition-metal elements with various numbers valence electrons in Heusler alloys. scandium-based full should form an XA structure according SPR, because element Sc fewer tends occupy Wyckoff sites A(0, 0, 0) B(0.25, 0.25, 0.25). As opposed previous investigations, L21-type alloys, do not follow are also considered this work. Theoretical...
This study aims to investigate the impact of a self-developed environmentally friendly composite dust suppressant on soil properties, with objective addressing pollution at construction sites. A series experiments were conducted examine effects strength (including compressive strength, shear and surface hardness) wind erosion resistance. The results demonstrate that spraying diluted 10 times not only significantly enhances ductility but also reduces usage cost. Furthermore, treated exhibited...
We calculated the energy consumed for phase boundary motion in a ${\mathrm{Ni}}_{52}{\mathrm{Mn}}_{23}{\mathrm{Ga}}_{25}$ single-crystalline sample during martensitic transformation using friction phenomenological theory. It was found that is 13.14 J/mol, only small part of latent heat transformation. Furthermore, results loops measured by ac magnetic susceptibility proved thermal hysteresis direct proportion to volume fraction martensite. also indicated originates from motion.
This letter reports on an alloy design of Mn50Ni37In10Co3 based the principle Mn-Mn ferromagnetic coupling via Co doping. The is shown to exhibit a metamagnetic martensitic transformation and high saturation magnetization 118 emu/g in its austenitic state. generates large difference 89 emu/g, more than 200% what reported literature for similar alloys. A complete magnetic field induced was achieved at 170 K. Such provides strong driving force magnetic-field-induced transformation, making this...
Materials with full spin polarization that exhibit zero net magnetization attract great scientific interest because of their potential applications in spintronics. Here, the structural, magnetic and electronic properties a C 1 b -ordered FeMnGa alloy are reported using first-principles calculations. The results indicate corresponding band structure exhibits considerable gap one channels other thus allowing for high mobility fully spin-polarized carriers. localized moments Fe Mn atoms have an...
The first-principles calculation within density-functional theory is used to search for new candidates of half-metallic ferromagnets in semi-Heusler alloys NiCrM (M = P, As, Sb, S, Se and Te). Our calculations predict that NiCrP, NiCrSe NiCrTe are (HMFs) with magnetic moments nearly 3 or 4 μB/fu HM gaps 0.263, 0.047 0.102 eV, respectively. Other compounds so-called HMFs. Substitution the sp atoms cannot be responsible formation band gap, but results a shift Fermi level loss half-metallicity....
We have found that CoTiFeP, CoTiFeAs and CoTiFeSb with 26 valence electrons are magnetic semiconductors by first-principles calculations. The electronic structure, propeties origin of the band gap investigated compared semiconductor CoTiVAl 21 electrons. It has been moment in mainly originates from large exchange splitting effect V atom, which carries largest 2.14 μ B, parallel to those Co Ti, while CoTiFeZ (Z = P, As, Sb) compounds, moments originate Fe atoms. atomic an antiparallel...
A theoretical study based on first-principle band-structure calculations is carried out for the hypothetical semi-Heusler alloys NiVM (M=P, As, Sb, S, Se, and Te). For all compounds it found that ferromagnetic state more favorable than paramagnetic state. NiVAs predicted to be a half-metallic ferromagnet with small gap of 0.07 eV an integer magnetic moment 2 μB, NiVP NiVSb are so-called nearly ferromagnets. Furthermore, we find clear indication substitution sp atoms influences hybridization...
Intrinsic large anomalous Hall effect (AHE) due to Berry curvature (BC) has attracted much attention in recent years not only for the fundamental research but also potential application prospect sensors. Iron-based alloys are one of representative materials. In this paper, AHE been studied Fe3Ge with DO19 and DO3 structures. Experimental results show that both samples have ferromagnetic properties spontaneous moment 5.51 5.29 μB/f.u. at 5 K Fe3Ge, respectively. The temperature dependence...
First-principles calculations within density-functional theory are used to investigate zinc-blende-structured CrBi. Our calculation predicts ZB-type CrBi be a true half-metallic ferromagnet with magnetic moment of 3 μB per formula. Its half-metallicity can maintained over relatively wide range lattice constant (from −8 8%). The trends varying for the system CrM (M = P, As, Sb, Bi) also studied.
The thermal conductivity of various carbon nanotubes with defects or intramolecular junctions was studied using nonequilibrium molecular dynamics approach. results show that the both armchair and zigzag increased decrease radius tube. tube is higher than when radii two tubes are kept almost same. Discontinuities appear on temperature profile along axial at region IMJ, resulting in large gradient thus lower ( n , )/( m 0) one IMJ 0)/( IMJs. For IMJs, phonon mean free path middle ) much smaller isolate