A5072543658- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Multiferroics and related materials
- Acoustic Wave Resonator Technologies
- Dielectric properties of ceramics
- Quantum and electron transport phenomena
- Dielectric materials and actuators
- Quantum many-body systems
- Spectroscopy and Quantum Chemical Studies
- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Physics of Superconductivity and Magnetism
- Advanced ceramic materials synthesis
- Topological Materials and Phenomena
- Advanced MEMS and NEMS Technologies
- Thermal Expansion and Ionic Conductivity
- Quantum Mechanics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum optics and atomic interactions
- Theoretical and Computational Physics
- Electrical and Thermal Properties of Materials
- Sensor Technology and Measurement Systems
- Advanced Sensor and Control Systems
- Electronic and Structural Properties of Oxides
Xi’an University of Posts and Telecommunications
2015-2024
Shaanxi Normal University
2022
Xi'an Jiaotong University
2011
0.94(Na 0.5 Bi 0.5+ x )TiO 3 –0.06BaTiO ( = −0.04, 0, 0.02; named NB 0.46 T‐6 BT , 0.50 0.52 respectively) lead‐free piezoelectric ceramics were prepared via the solid‐state reaction method. Effects of 3+ nonstoichiometry on microstructure, dielectric, ferroelectric, and properties studied. All show typical X‐ray diffraction peaks ABO perovskite structure. The lattice parameters increase with in content. electron probe microanalysis demonstrates that excess 2 O starting composition can...
Light control of dielectric properties is very significant to develop photo-dielectric devices. Here, light-triggered “on-off” switchable constant (εr) was observed in (Bi0.5Na0.5)0.94Ba0.06TiO3 lead-free ferroelectric ceramics, exhibiting unconventional effect (PDE). The effects light switch period (2–165 min), intensity (20–100 mW/cm2), and wavelength (450–940 nm) on PDE were studied detail. Variation εr exhibits remarkable with changing on-off, while loss remains almost unchanged,...
Via the method of cold sintering with post-annealing, lead-free ceramics [Formula: see text][Formula: text]NbO 3 were prepared. The sintered pellet without post-annealing shows a relative density ([Formula: text] 77.9%, which is larger than green via conventional solid-state (SSS) text]). pellets post-annealed at temperatures between text]C and text]C. effect on microstructure, dielectric, ferroelectric piezoelectric properties was studied in detail. After being post-annealed, densities...
The lead-free ceramics ([Formula: see text])(0.94[Formula: text][Formula: text]TiO 3 -0.06BiAlO )-[Formula: text]AgNbO (denoted as BNBTA-[Formula: text]AN) were synthesized via a solid-state sintering method. effect of AgNbO doping amount on dielectric properties the was studied systematically. X-ray diffraction (XRD), scanning electron microscope (SEM) and Raman spectroscope used to detect structure ceramics. Temperature-dependent spectra, frequency-dependent constant alternating current...
Scaling behavior of dynamic hysteresis (Na0.47Bi0.47Ba0.06)0.95A0.05TiO3 (A = Sr2+/Ca2+) (expressed as BNBT-Sr and BNBT-Ca, respectively) lead-free ceramics was comparatively studied. BNBT-Ca exhibits typical ferroelectric (polarization vs electric field, P–E) loops, while shows pinched P–E loops. The two samples' field frequency-dependent were systematically investigated. dopants difference (Sr2+/Ca2+) produces different scaling hysteresis, which is related to the field-induced phase...
Dense ([Formula: see text][Formula: text]NbO 3 lead-free ceramics with the simple composition were prepared via sintering in low oxygen partial pressure (pO 2 , [Formula: text] atm) atmosphere and adding LiF. All have pure orthorhombic structure. Compared to LiF-added sintered air pO -sintered without LiF addition, present exhibit improved piezoelectric ferroelectric properties. The constant is 125 pC/N, converse text]* 186 pm/V. dielectric loss of at room temperature 1 kHz are 451 0.03,...