A5100378311- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Electronic and Structural Properties of Oxides
- Rare-earth and actinide compounds
- Thermal Expansion and Ionic Conductivity
- Ferroelectric and Piezoelectric Materials
- Magnetic Properties of Alloys
- Shape Memory Alloy Transformations
- Heusler alloys: electronic and magnetic properties
- Physics of Superconductivity and Magnetism
- Magnetic properties of thin films
- Semiconductor materials and devices
- Magnetic Properties and Applications
- Polyoxometalates: Synthesis and Applications
- Advanced Thermoelectric Materials and Devices
- Iron-based superconductors research
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
- Diamond and Carbon-based Materials Research
- Nanocluster Synthesis and Applications
- Organic Light-Emitting Diodes Research
- Phase Change Materials Research
- Advancements in Solid Oxide Fuel Cells
- Graphene research and applications
Chinese Academy of Sciences
2016-2025
University of Chinese Academy of Sciences
2016-2025
Czech Academy of Sciences, Institute of Physics
2022-2025
Physical Sciences (United States)
2025
Institute of Physics
2011-2024
Chinese PLA General Hospital
2022-2024
Fujian Academy of Building Research (China)
2019-2023
State Key Laboratory of Magnetism
2014-2023
Central South University
2022-2023
Central South University of Forestry and Technology
2023
MnCoGe-based compounds undergo a giant negative thermal expansion (NTE) during the martensitic structural transition from Ni2In-type hexagonal to TiNiSi-type orthorhombic structure. High-resolution neutron diffraction experiments revealed that of unit cell volume can be as large ΔV/V ∼ 3.9%. The optimized compositions with concurrent magnetic and transitions have been studied for magnetocaloric effect. However, these materials not considered NTE partially due limited temperature window phase...
Abstract The most widespread cooling techniques based on gas compression/expansion encounter environmental problems. Thus, tremendous effort has been dedicated to develop alternative technique and search for solid state materials that show large caloric effects. An application of pressure a material can cause change in temperature, which is called the barocaloric effect. Here we report giant effect hexagonal Ni 2 In-type MnCoGe 0.99 In 0.01 compound involving magnetostructural...
Abstract Plastic crystals as barocaloric materials exhibit the large entropy change rivalling freon, however, limited pressure-sensitivity and hysteresis of phase transition hinder colossal effect accomplished reversibly at low pressure. Here we report reversible pressure in two-dimensional van-der-Waals alkylammonium halides. Via introducing long carbon chains ammonium halide plastic crystals, structure forms (CH 3 –(CH 2 ) n-1 NH X (X: halogen element) with weak interlayer force, which...
A tough non-woven material of single-walled carbon nanotubes (SWNTs) with an area up to several tens square centimeters (see Figure) has been prepared by a direct-floating chemical vapor deposition method followed purification. The SWNT exhibits extremely high Young's modulus ca. 0.4–0.7 TPa, so it potential applications in mechanical reinforcement composite materials.
The cascade of correlated topological quantum states in the newly discovered vanadium-based kagome superconductors, AV
Adiabatic demagnetization refrigeration (ADR) offers a compelling alternative to traditional ultra-low temperature technologies by eliminating the reliance on scarce 3He and gravitational constraints. The key of ADR development is find magnetic refrigerants with exceptional magnetocaloric properties. In this study, polycrystalline CsEuCl3 CsEuBr3 halide perovskites were synthesized simple solid-phase reaction method. crystallizes in tetragonal structure, while forms an orthorhombic both...
Abstract Affording the unique attributes of parallel processing, high-speed operation, and multi-dimensional manipulation, optical encryption has garnered attention as an excellent candidate for high-security information encoding decoding. However, existing schemes that employ common photonic dimensions like wavelength, polarization, angular momentum are subject to upper limit O(2N), significantly hampering development security. To overcome this limitation, we present a novel approach, which...
The hydrogen storage capacities of K-decorated silicene and silicane are studied using first-principles calculations. It is found that K atoms can form a uniform stable coverage on one side both sides silicane. Each atom absorb maximum five H2 molecules the capacity reach 6.13 wt. % with an average adsorption energy 0.133 eV/H2. This in excess 6 %, U. S. Department Energy target. remarkable result indicating another application silicene/silicane as potential high-capacity medium.
Power conversion efficiency of polycrystalline silicon solar cells increased about 1.3% with this broadband antireflective double-layer mesoporous silica coating.
Solid-state refrigeration based on caloric effect has been regarded as an attractive alternative to the conventional gas compression technique. Boosting of a system its optimum is long-term pursuit. Here, we report enhanced magnetocaloric (MCE) and barocaloric (BCE) by hydrostatic pressure in La(Fe0.92Co0.08)11.9Si1.1 with NaZn13-type structure. The entropy change ΔSMCE almost doubled under 11.31 kbar, while ΔSBCE more than tripled 9 kbar. To disclose essence from atomic level, neutron...
Modifying the crystal structure and corresponding functional properties of complex oxides by regulating their oxygen content has promising applications in energy conversion chemical looping, where controlling migration plays an important role. Therefore, finding efficacious feasible method to facilitate become a critical requirement for practical applications. Here, we report compressive-strain-facilitated with reversible topotactic phase transformation (RTPT) La0.5Sr0.5CoOx films based on...
The cyclability and frequency dependence of the adiabatic temperature change (ΔTad) under an alternating magnetic field (AMF) are significantly important from viewpoint refrigeration application. Our studies demonstrated, by direct measurements, that low-magnetic-field performance ΔTad in FeRh alloys can be largely enhanced introducing second phases. a 1.8 T, 0.13 Hz AMF is reduced 14%, which much better than (40-50%) monophase previously reported. More importantly, introduction phases...
Abnormal percolative transport in inhomogeneous systems has drawn increasing interests due to its deviation from the conventional percolation picture. However, nature is still ambiguous partly difficulty obtaining controllable abnormal behaviors. Here, we report first observation of electric-field-controlled (011)-Pr0.7(Ca0.6Sr0.4)0.3MnO3/0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 heterostructure. By introducing an electric-field-induced in-plane anisotropic strain-field a phase separated PCSMO film,...
By utilizing the large lattice distortion caused by incommensurate cone-spiral magnetic ordering and induced texture effect in Fe-doped MnNiGe alloys, NTE largely exceeding average crystallographical contribution has been achieved.
The realization of a large low-field magnetoresistance (LFMR) effect in free-standing magnetic oxide films is crucial goal toward promoting the development flexible, low power consumption, and nonvolatile memory devices for information storage. La0.7Sr0.3MnO3 (LSMO) an ideal material spintronic due to its excellent electronic properties. However, it difficult achieve both LFMR high flexibility LSMO lack research on LFMR-related mechanisms strict growth conditions, which require rigid...
Adiabatic demagnetization refrigeration (ADR) based on the magnetocaloric effect (MCE) is a promising technique to achieve cryogenic temperature. However, magnetic entropy change (ΔSM), driving force of ADR, remains far below theoretical −ΔSM = nRln(2J + 1)/MW for most refrigerants. Here, we report giant MCE in orthorhombic EuCl2, where ferromagnetic ground state with excellent single-ion behavior Eu2+ and free spins has been demonstrated by combining ab initio calculations Brillouin...