A5100724891- Iron-based superconductors research
- Advanced Photocatalysis Techniques
- Metal and Thin Film Mechanics
- Physics of Superconductivity and Magnetism
- Rare-earth and actinide compounds
- High-pressure geophysics and materials
- Luminescence Properties of Advanced Materials
- Pigment Synthesis and Properties
- Corporate Taxation and Avoidance
- MXene and MAX Phase Materials
- Advanced materials and composites
- Boron and Carbon Nanomaterials Research
- 2D Materials and Applications
- Ferroelectric and Piezoelectric Materials
- Magnetic and transport properties of perovskites and related materials
- Diamond and Carbon-based Materials Research
- Multiferroics and related materials
- Superconductivity in MgB2 and Alloys
- Electronic and Structural Properties of Oxides
- Intellectual Capital and Performance Analysis
- Nanomaterials for catalytic reactions
- Advanced Battery Materials and Technologies
- Microwave Dielectric Ceramics Synthesis
- Microstructure and mechanical properties
- Perovskite Materials and Applications
Institute of Nuclear Physics
2020-2025
China Academy of Engineering Physics
2015-2025
Dalian University of Technology
2022-2025
Nanjing University of Aeronautics and Astronautics
2017-2025
Huaqiao University
2007-2024
Shanghai Jiao Tong University
2024
Center for High Pressure Science and Technology Advanced Research
2024
Shenyang Institute of Automation
2023-2024
Academy of Opto-Electronics
2024
Institute of Physics
2007-2023
By partially substituting the tri-valence element La with di-valence Sr in LaOFeAs, we introduced holes into system. For first time, successfully synthesized hole-doped new superconductors (La1- xSrx)OFeAs. The maximum superconducting transition temperature at about 25 K was observed a doping level of x=0.13. It is evidenced by Hall effect measurements that conduction this type material dominated hole-like charge carriers, rather than electron-like ones. Together data electron-doped system...
We present detailed measurements of the longitudinal resistivity ${\ensuremath{\rho}}_{xx}(T,H)$ and upper critical field ${H}_{c2}$ ${\text{NdFeAsO}}_{0.7}{\text{F}}_{0.3}$ single crystals in strong dc pulsed magnetic fields up to 45 60 T, respectively. found that scale is comparable ${H}_{c2}\ensuremath{\sim}100\text{ }\text{T}$ high-${T}_{c}$ cuprates. ${H}_{c2}(T)$ parallel $c$ axis exhibits a pronounced upward curvature similar what was extracted from earlier on polycrystalline...
A novel CuAl 2 O 4 /MoS /BaFe 12 19 photocatalyst is synthesized that simultaneously couples type I and Z-scheme heterojunctions exhibits high photocatalytic activity for the degradation of TC under simulated sunlight irradiation.
Abstract A polyacrylamide gel method has been used to synthesize a variety of polyvalent‐transition‐metal‐doped Ni position high entropy spinel oxides (Ni 0.2 Zn Mg Cu Co )Al 2 O 4 ‐800 °C (A ) on the basis NiAl , and catalytic activity is studied under synergistic action peroxymonosulfate (PMS) activation simulated sunlight. The containing polyvalent transition metals 2+ can effectively activate PMS efficiently degrade levofloxacin (LEV) tetracycline hydrochloride (TCH) sunlight...
Abstract Dye‐sensitized solar cells (DSSCs) are receiving considerable attention as low‐cost alternatives to conventional cells. In DSSCs based on liquid electrolytes, a photoelectric efficiency of 11 % has been achieved, but potential problems in sealing the and low long‐term stability these systems have impeded their practical use. Here, we present thermoplastic gel electrolyte (TPGE) an alternative electrolytes used DSSCs. The TPGE exhibits character, high conductivity, stability, can be...
We report a systematic investigation, together with theoretical analysis, of the resistivity and Hall effect in single crystals $\text{Ba}{({\text{Fe}}_{1\ensuremath{-}x}{\text{Co}}_{x})}_{2}{\text{As}}_{2}$ over wide doping range. find surprisingly great disparity between relaxation rates holes electrons excess one order magnitude low-doping, low-temperature regime. The ratio electron to hole mobilities diminishes temperature (away from magnetically ordered state) becomes more conventional....
The average measured Hv for polycrystalline ReB2 and Ti–B composites under different loads shows that the tendency of to decrease becomes weak large loads, hardness is always lower than composites. For comparison, results from Chung et al. were inserted into figure.
Abstract Three ZnAl 2 O 4 samples were prepared via a modified polyacrylamide gel method using citric acid solution with different aluminum salt starting materials, including AlCl 3 ∙6H O, Al (SO ) ∙18H and Al(NO ∙9H under identical conditions. The influence of salts on the morphologies, phase purity optical fluorescence properties as-prepared nanoparticles studied. experimental results demonstrate that purity, particle size, morphology can be manipulated by use as materials. energy bandgap...
By using a two-step method, we successfully synthesized the new iron-based superconductor LaFeAsO0.9F0.1−δ. The resistive transition curves under different magnetic fields were measured, leading to determination of upper critical field Hc2(T) this superconductor. value Hc2 at zero temperature is estimated be about 50 T roughly. In addition, Hall effect and magnetoresistance measured in wide region. A negative coefficient RH has been found, implying dominant conduction mainly by electron-like...
In this paper we report the fabrication and superconducting properties of GdO$_{1-x}$F$_{x}$FeAs. It is found that when x equal to 0.17, GdO$_{0.83}$F$_{0.17}$FeAs a superconductor with onset transition temperature T$_{c}^{on}\approx$ 36.6K. Resistivity anomaly near 130K was observed for all samples up = such phenomenon similar LaO$_{1-x}$F$_{x}$FeAs. Hall coefficient indicates conducted by electron-like charge carriers.
Magnetization and its relaxation have been measured in $Ba(Fe_{1-x}Co_x)_2As_2$ single crystals at various doping levels ranging fromvery underdoped to very overdoped regimes. Sizable magnetization rate has observed all samples, indicating a moderate vortex motion relatively small characteristic pinning energy. Detailed analysis leads the following conclusions: (1) A prominent second-peak (SP) effect was samples around optimal level (x $\approx$ 0.08), but it becomes invisible or weak...
A novel carbon quantum dots decorated n-n type CeO2/SrFe12O19 (CQDs/CeO2/SrFe12O19) magnetic separation photocatalyst was successfully synthesized via a hydrothermal method and gamma-ray assisted polyacrylamide gel combined with low temperature sintering technology. To study the feasibility of CQDs/CeO2/SrFe12O19 as an adsorbent to remove methylene blue (MB) dye, series heterostructure construction, adsorption photocatalytic experiments were carried out. When compared pristine CeO2,...
This novel double heterojunction carbon quantum dots (CQDs)/CeO2/BaFe12O19 magnetic separation photocatalysts (CCBFOMSPs) were successfully prepared via a polyacrylamide gel method and low temperature sintering technology combined with hydrothermal method. The CQDs components in CCBFOMSPs identified by neutron powder diffraction, Raman spectroscopy X-ray photoelectron spectroscopy. charge carriers could transfer between the valence state (CeO2 BaFe12O19) facilely, inhibiting recombination of...
A polyacrylamide gel method has been used to synthesize spinel type nano-CuB2O4 with cubic phase (B = Al) and tetragonal Cr Fe). The structure, functional group information, charge state characterization confirm that the CuAl2O4 oxides contain no impurities, while CuCr2O4 CuFe2O4 CuO impurities. exhibit a small particle size of 25 nm, high optical band gap (Eg) value, adsorption capacity for Congo red dye, photocatalytic activity degradation tetracycline hydrochloride (TCH), which are much...