A5101569949- Magnetic Properties of Alloys
- Magnetic properties of thin films
- Magnetic and transport properties of perovskites and related materials
- Metallic Glasses and Amorphous Alloys
- Magnetic Properties and Applications
- Rare-earth and actinide compounds
- Theoretical and Computational Physics
- Microstructure and Mechanical Properties of Steels
- Advanced Condensed Matter Physics
- Shape Memory Alloy Transformations
- Advanced Materials Characterization Techniques
- Thermal Expansion and Ionic Conductivity
- Metallurgical and Alloy Processes
- Phase-change materials and chalcogenides
- High-pressure geophysics and materials
- Material Properties and Applications
- Topological Materials and Phenomena
- Metal Alloys Wear and Properties
- Microstructure and mechanical properties
- Surface Roughness and Optical Measurements
- Electronic and Structural Properties of Oxides
- Physics of Superconductivity and Magnetism
- Superconductivity in MgB2 and Alloys
- Boron and Carbon Nanomaterials Research
- Copper Interconnects and Reliability
Institute of Physics
2008-2025
Chinese Academy of Sciences
2001-2025
Anhui University
2025
Ningbo Institute of Industrial Technology
2025
University of Chinese Academy of Sciences
2017-2025
Jiangxi Academy of Sciences
2021
Boston College
2020
University of Science and Technology Beijing
2020
Beihang University
2020
Hefei Institutes of Physical Science
2019
Very large magnetic entropy change ?SM, which originates from a fully reversible second-order transition at Curie temperature TC, has been discovered in compounds La(Fe, Si)13, Al)13 and those with Co doping. The maximum ?SM ? 19 J?kg-1?K-1, achieved LaFe11.4Si1.6 209K upon 5T field change, exceeds that of Gd by more than factor 2. TC the Co-doped shifts to higher temperatures. still considerable magnitude near room temperature. phenomena very convenience adjustment also superiority low...
Abstract The anomalous Hall effect (AHE) can be induced by intrinsic mechanisms due to the band Berry phase and extrinsic one arising from impurity scattering. recently discovered magnetic Weyl semimetal Co 3 Sn 2 S exhibits a large conductivity (AHC) giant angle (AHA). predicted energy dependence of AHC in this material plateau at 1000 Ω −1 cm an width 100 meV just below E F , thereby implying that will not significantly change against small‐scale disturbances such as slight p‐ doping....
Abstract Exploring and comprehending magnetocaloric materials with spin reorientation (SR) phase transition is of vital importance for practical applications effect (MCE). Herein, this study presents a systematic on the magnetic properties, heat transport structure, electronic structure NdNi compound. observed to undergo an SR ferromagnetic (FM) paramagnetic (PM) successively increasing temperature. Neutron powder diffraction (NPD) experiment reveals that involves rotation Nd moment from...
Spin-orbit torque (SOT) induced by current is a promising approach for electrical manipulation of magnetization in advancing next-generation memory and logic technologies. Conventional SOT-driven perpendicular switching typically requires an external magnetic field symmetry breaking, limiting practical applications. Recent research has focused on achieving field-free through out-of-plane SOT, with the key challenge being exploration new spin source materials that can generate z-polarized...
Magnetic properties and magnetocaloric effects of La1−xRxFe11.5Si1.5 (R = Pr, (0 ≤ x 0.5); R Ce Nd, 0.3)) compounds are investigated. Partially replacing La with Ce, Pr Nd in leads to a reduction Curie temperature due the lattice contraction. The substitution for causes an enhancement field-induced itinerant electron metamagnetic transition, which remarkable increase magnetic entropy change ΔSm also hysteresis loss. However, high effective refrigerant capacity RCeff is still maintained...
Magnetocaloric effect（MCE) is the intrinsic property of a magnetic material near transition temperature and refrigeration based on MCE has been demonstrated as promising alternative to conventional gas compression or expansion due its high energy efficiency environmental friendliness. The development technology depends research progress refrigerant materials with large MCEs. Lots researches exploration optimization have promoted in recent decades. In this paper, we introduce basic theory...
The LaFe11.5Si1.5H1.3 interstitial compound has been prepared. Its Curie temperature TC (288 K) adjusted to around room and the maximal magnetic entropy change (|ΔS|~17.0 J·kg-1·K-1 at TC) is larger than that of Gd (|ΔS|~9.8 TC=293 by ~73.5% under a from 0 5 T. origin large attributed first-order field-induced itinerant-electron metamagnetic transition. Moreover, hysteresis increase decrease field very small, which favourable refrigeration application. present study suggests promising...
Magnetization measurements for amorphous ${\mathrm{Fe}}_{90\mathrm{\ensuremath{-}}\mathit{x}}$${\mathit{M}}_{\mathit{x}}$${\mathrm{Zr}}_{10}$ (M=V, Cr, Mn, Co, Ni, Cu, Si, and B) alloys prepared by single-roller spin quenching have been made an extracting sample magnetometer in magnetic fields up to 65 kOe at temperatures ranging from 1.5 300 K. Preliminary results show that the properties of these strongly depend upon M concentration display a similarity those parent Fe-Zr base; compared...
Magnetization, resistance, and current–voltage (I–V) measurements have been performed in La0.5Sr0.5MnO3 compact prepared by pressing sol-gel nanoparticles (46 nm) at 723 K with a high pressure (4 GPa). The pressed compound orders ferromagnetically 340 (TC) has substantial drop the thermomagnetic curve below 158 (TDP). After undergoing metal–to–semiconductor transition 140 (TMS), reenters into strong semiconducting state 60 K, demonstrating charge localized behavior induced small grain rather...
Co3Sn2S2, a quasi-two-dimensional system with kagome lattice, has been found to be magnetic Weyl semimetal recently. In this work, the anisotropies of magnetization and transport properties Co3Sn2S2 were investigated. The high field measurements reveal giant magnetocrystalline anisotropy an out-of-plane saturation 0.9 kOe in-plane 230 at 2 K, showing coefficient Ku up 8.3 × 105 J m−3, which indicates that it is extremely difficult align small moment 0.29 μB/Co on lattice from c axis ab...
Magnetic properties and magnetic entropy change in La (Fe1-xMnx)11.7Si1.3Hy compounds have been investigated. A significant increase of the Curie temperature TC a small saturation magnetizations µS observed after introduction interstitial H, which caused slight volume expansion. The first-order field-induced itinerant-electron metamagnetic (IEM) transition remains brings about large around room temperatures for compounds. maximal is 23.4, 17.7 15.9J/kg·K under field from 0 to 5T x=0.01, 0.02...
We report on the magnetic properties and magnetocaloric effects of Mn5Ge3−xGax compounds with x=0.1, 0.2, 0.3, 0.4, 0.6 0.9. All samples crystallize in hexagonal Mn5Si3-type structure space group P63/mcm order ferromagnetically. The Curie temperature these decreases increasing x, from 306K (x=0.1) to 274K (x=0.9). average Mn moments increases Ga content, reaching a maximum value at x=0.6. entropy changes are determined field dependence magnetization using thermodynamic Maxwell relation....
Structure, magnetic and transport properties of YMn6Sn6-xGax (0⩽x⩽0.6) compounds with a HfFe6Ge6-type structure were investigated. It was found that the Ga substitution leads to contraction unit-cell volume. A transition from an antiferromagnetic ferromagnetic (or ferrimagnetic) state can be observed for samples (0.1⩽x⩽0.2) increasing temperature. The antiferro-ferromagnetic x⩽0.2 also induced by external field. required field is very low decreases concentration. More concentration (x⩾0.3)...
We have studied the magnetic and magnetocaloric properties of Er3Co compound, which undergoes ferromagnetic ordering below Curie temperature TC = 13 K. It is found by fitting isothermal magnetization curves that Landau model appropriate to describe compound. The giant effect (MCE) without hysteresis loss around result from second-order ferromagnetic-to-paramagnetic transition. maximal value entropy change 24.5 J/kgK with a refrigerant capacity (RC) 476 J/kg for field 0–5 T. Large reversible...
The ErCo2 compound is prepared by arc-melting and its entropy changes are calculated using Maxwell relation. Its change reaches 38 J/(kg·K) refrigerant capacity achieves 291 J/kg at 0–5 T. mean field approximation used to calculate the magnetic of compound. Results estimated relation deviate from calculations in ferrimagnetic state; however, data obtained two ways consistent vicinity phase transition or higher temperatures. This indicates that mainly derived degree freedom, lattice has...
Magnetic properties and magnetocaloric effect in TbCo2-xFex compounds are studied by DC magnetic measurement. With increasing content of Fe, the entropy changes decrease slightly, though Curie temperature is tuned from 231 K (x = 0) to 303 0.1). entropies TbCo2 compound calculated using mean field approximation (MFA). Results estimated Maxwell relation consistent with that MFA calculation. It shown mainly derived changes. The lattice has almost no contribution change vicinity phase transition.
Abstract The kagome lattice Co 3 Sn 2 S exhibits the quintessential topological phenomena of a magnetic Weyl semimetal such as chiral anomaly and Fermi-arc surface states. Probing its properties is crucial for understanding this correlated state. Here, using spin-polarized scanning tunneling microscopy/spectroscopy (STM/S) non-contact atomic force microscopy (nc-AFM) combined with first-principle calculations, we report discovery localized spin-orbit polarons (SOPs) three-fold rotation...
The magnetic transition, transport properties, and domain structures of the polycrystalline Mn1.9Fe1.1Sn compound with a hexagonal structure have been investigated. result shows that ferromagnetic antiferromagnetic phases coexist in this compound. A large topological Hall effect up to 3.5 μΩ·cm at 50 K has found due formation noncoplanar spin when competition occurs among magnetocrystalline anisotropy, coupling, interaction low temperature. situ Lorentz transmission electron microscopy...
Magnetoresistances and magnetic entropy changes in NaZn13-type compounds La(Fe1−xCox)11.9Si1.1 (x=0.04, 0.06 0.08) with Curie temperatures of 243 K, 274 K 301 respectively, are studied. The ferromagnetic ordering is accompanied by a negative lattice expansion. Large wide temperature range from ~230 to ~320 achieved. Raising Co content increases the but weakens magnetovolume effect, thereby causing decrease change. These materials exhibit metallic character below TC, whereas electrical...
Effects of Nd-doping on the magnetic properties and magnetocaloric effects (MCEs) NdxLa1-x Fe11.5 Al1.5 have been investigated. Substitution Nd leads to a weakening antiferromagnetic (AFM) coupling an enhancement ferromagnetic (FM) coupling. This in turn results complex behaviour for Nd0.2La0.8Fe11.5Al1.5 characterized by occurrence two phase transitions at ∼188K (PM–AFM) ∼159K (AFM–FM). As result, table-like MCE (9 J/kg·K) is found wide temperature range (160–185 K) field change 0–5T around...