A5102738547- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Intermetallics and Advanced Alloy Properties
- High Temperature Alloys and Creep
- Advanced materials and composites
- Rare-earth and actinide compounds
- Iron-based superconductors research
- Advanced ceramic materials synthesis
- Physics of Superconductivity and Magnetism
- MXene and MAX Phase Materials
- Organic and Molecular Conductors Research
- Dielectric properties of ceramics
- solar cell performance optimization
- Aluminum Alloys Composites Properties
- Solar Radiation and Photovoltaics
- Inorganic Chemistry and Materials
- Ferroelectric and Piezoelectric Materials
- Metal and Thin Film Mechanics
- High Entropy Alloys Studies
- Topological Materials and Phenomena
- Photovoltaic System Optimization Techniques
- 2D Materials and Applications
- Chalcogenide Semiconductor Thin Films
Tamkang University
2016-2024
Xiamen University
2018-2022
Using magnetization, dielectric constant, and neutron diffraction measurements on a high quality single crystal of YBaCuFeO5 (YBCFO), we demonstrate that the shows two antiferromagnetic transitions at K K, displays giant constant with characteristic relaxation TN2. It does not show evidence electric polarization for used this study. The transition TN1 corresponds paramagnetic to magnetic propagation vector doubling unit cell along three crystallographic axes. Upon cooling, TN2, commensurate...
We report the tunable magnetic structures in helimagnet $\mathrm{YBa}{(\mathrm{C}{\mathrm{u}}_{1\ensuremath{-}x}\mathrm{F}{\mathrm{e}}_{x})}_{2}{\mathrm{O}}_{5}$ by changing various Cu/Fe ratios. The properties and of samples were studied using neutron- x-ray powder diffraction susceptibility measurements. parent material $\mathrm{YBaCuFe}{\mathrm{O}}_{5}$ (YBCFO) exhibits two antiferromagnetic (AFM) transitions at ${T}_{N1}\ensuremath{\sim}450$ K ${T}_{N2}\ensuremath{\sim}175$ K. At...
Structural phase transitions in ${\mathrm{Sr}}_{3}{\mathrm{Rh}}_{4}{\mathrm{Sn}}_{13}$ and ${\mathrm{Sr}}_{3}{\mathrm{Ir}}_{4}{\mathrm{Sn}}_{13}$ are currently of interest due to the evidence strong correlation with their superconductivity. To further obtain additional insight into thermodynamic properties transitions, we have performed a study single-crystalline by means specific-heat thermal-expansion measurements, mainly focusing on features around phase-transition temperature...
Effects of electronic and atomic structures V-doped 2D layered SnS2 are studied using X-ray spectroscopy for the development photocatalytic/photovoltaic applications. Extended absorption fine structure measurements at V K-edge reveal presence VO VS bonds which form intercalation tetrahedral OVS sites in van der Waals (vdW) gap layers. near-edge (XANES) reveals not only valence state dopant is ≈4+ but also charge transfer (CT) from to ligands, supported by Lα,β resonant inelastic...
Abstract X-ray scattering (XRS), x-ray absorption near-edge structure (XANES) and extended fine (EXAFS) spectroscopic techniques were used to study the electronic atomic structures of high-quality Sr 3 Ir 4 Sn 13 (SIS) single crystal below above transition temperature (T * ≈ 147 K). The evolution a series modulated satellite peaks in XRS experiment indicated formation possible charge density wave (CDW) (110) plane. EXAFS phase derivative analysis supports CDW-like by revealing different bond...
Two isothermal sections of the Ni-V-Ta ternary system at 1200 °C and 1000 have been experimentally established using X-ray diffraction, electron probe microanalysis, energy dispersive spectroscopy, differential scanning calorimeter with equilibrated key alloys. The equilibrium composition each phase is measured by microanalysis spectroscopy. results indicate that: (1) nine three-phase eight regions were confirmed in section °C, respectively; (2) C14 a large solubility about 51.2 at. % Ni was...
Phase diagrams of two isothermal sections the Ni–Ti–Ta ternary system at 1000 and 1200 °C in a full composition range were determined by X-ray diffraction electron probe microanalysis. The experimental results indicated compound τ phase with low solid solubility ranges (16.3–22.4) at.% Ta, (15.9–24.1) Ti (58.5–60.0) Ni °C. terminal solutions (bcc-(Ta) β-Ti) formed continuous solution A certain amount can dissolve into Ni–Ta intermetallic compounds near side, highest value 21.9 observed Ni2Ta
Temperature-dependent X-ray absorption near-edge structures, linear dichroism (XLD) and extended fine structure (EXAFS) spectroscopic techniques were used to investigate the valence state, preferred orbital local atomic that significantly affect electrical magnetic properties of a single crystal YBaCuFeO5 (YBCFO). An onset increase resistivity at ~180 K, followed by rapid at/below 125 is observed. antiferromagnetic (AFM)-like transition close temperature which starts in ab-plane also...
This work studies the correlation between noncollinear spin orientation and lattice distortion in XY-like spin-glass (SG) Ni0.4Mn0.6TiO3 (NMTO) using neutron diffraction synchrotron-radiation-based spectroscopic techniques such as resonant inelastic x-ray scattering (RIXS), absorption spectroscopy, magnetic circular dichroism (XMCD). The study reveals a shorter spin-spin length along c axis than XY-plane, which is typical of SG. It also that NiTiO3 matrix dominates shaping low-temperature...
Two isothermal sections of the Ni-Cr-Ta ternary system at 1200 °C and 1300 have been determined by using electron probe microanalysis, energy dispersive spectroscopy differential scanning calorimeter. A Laves phase (Ni, Cr)2Ta(HT)(C14 structure) with large solid solubility stabilized Ni addition was in both two sections. The composition range this about 25.8–66.0 at.% Cr, 2.5-44.3 Ni, 24.0-40.0 Ta °C, which increased raising temperature. melting point Ni-Cr alloys decreased Ta. No compound...
Flexible power point tracking (FPPT) algorithms are proposed to make the PV inverter more friendly grid. However, existing FPPT algorithm is realized based on both voltage and current sensors side. On one hand, cost added by adopting at same time. other calculation burden increased calculating power. Single-sensor-based MPPT have been a lot in past year, where of only calculated or voltage. Because output boost converter can be regarded as constant two-stage inverter. It gives opportunity...
Quantum materials have attracted a lot of attention in condensed matter physics because their exotic and fascinating physical properties, such as topological insulators/superconductors, geometrical spin/charge frustrations, or Dirac Weyl semimetals.It has been demonstrated that the different coupling strengths electronic ordering with spins, orbital, lattice are responsible for occurrence properties.The intermetallic compound Ir2In8Se found to be good candidate semimetal 1-3 .Using x-ray...