A5102772267- Ferroelectric and Piezoelectric Materials
- Rock Mechanics and Modeling
- Magnetic properties of thin films
- Multiferroics and related materials
- Combustion and flame dynamics
- ZnO doping and properties
- Geophysical Methods and Applications
- Magnetic Properties and Applications
- Landslides and related hazards
- Magnetic and transport properties of perovskites and related materials
- Acoustic Wave Resonator Technologies
- High voltage insulation and dielectric phenomena
- Chemical Reactions and Isotopes
- Ionosphere and magnetosphere dynamics
- GNSS positioning and interference
- Combustion and Detonation Processes
- High-pressure geophysics and materials
- Rare-earth and actinide compounds
- Thermal Analysis in Power Transmission
- Drilling and Well Engineering
- Advanced Combustion Engine Technologies
- Geophysics and Gravity Measurements
- Magnetic Properties of Alloys
- Microwave Dielectric Ceramics Synthesis
- Copper Interconnects and Reliability
China General Nuclear Power Corporation (China)
2023
Xi'an Jiaotong University
2004-2022
Beijing University of Civil Engineering and Architecture
2017-2022
Beijing University of Technology
2017-2022
Huazhong University of Science and Technology
2001-2021
University of Hong Kong
2005
Nanjing University
1993-2004
Low-dimensional materials such as carbon nanotubes (CNTs) are promising candidates for gas sensing. Surface modification with specific molecules is considered an effective approach to enhance In this work, a kind of hybrid fabricated phosphomolybdic acid (PMA) molecule-decorated single-walled CNTs (SWNTs) gas-sensing element and chemical vapor deposition-grown graphical graphene on prepatterned copper nickel films composite electrodes. According the experimental results NH3 NO2 detection,...
In this paper, we derived a compact model for the description of P–E hysteresis behavior based on dipole switching theory. Simulation results show good agreement with experiment various loops, and mathematical can be easily combined an electronic design automation software circuit simulation. Therefore, used both simulation providing better intuition ferroelectric material behavior.
The (1−x)Ba0.6Sr0.4TiO3−xCoFe2O4 multiferroic composite ceramics (x = 0.15−0.45) were fabricated by using the solid-state reaction method. X-ray diffraction shows that composites are composed of perovskite Ba0.6Sr0.4TiO3 phase and cubic spinel CoFe2O4 phase, without other secondary phase. Scanning electron microscopy morphology is dense comparatively homogenous. variations dielectric constant loss with frequency temperature indicate behave as relaxor ferroelectrics. display ferromagnetic...
(1−x)Sr0.84Pb0.16TiO3-xBi2O3·3TiO2(SPBT) (x = 0−0.14) were synthesized by solid-state reaction method. The effects of Bi2O3·3TiO2 amount on structure Sr0.84Pb0.16TiO3 ceramics investigated. X-ray diffraction results reveal a pure perovskite for samples at x 0-0.09, the second phase was appeared 0.14. Dielectric measurements exhibit relaxor-like characteristic SPBT ceramics. With addition dielectric constant increases room temperature ≤ .09 and value is above 3000 0.07 0.09. average breakdown...
A Ba0.8Sr0.2TiO3/CoFe2O4 layered heterostructure film was grown on a Pt/TiO2/SiO2/Si substrate by rfmagnetron sputtering. X-ray diffraction shows that the consists of perovskite Ba0.8Sr0.2TiO3 and spinel CoFe2O4 phases. The microstructures were observed scanning electron microscope (SEM), showing good surface morphology clear interfaces among film, substrate. variations dielectric properties with frequency are investigated. simultaneously displays distinct ferroelectricity ferromagnetism....
Uniformly patterned Pt∕PbTiO3∕PbZr0.3Ti0.7O3∕PbTiO3∕Pt capacitor arrays were etched in noncrystalline phase. The ferroelectric layer was well crystallized and contains uniform grains. capacitors exhibit well-saturated hysteresis loop excellent fatigue properties terms of larger saturation polarization Pmax 53.2μC∕cm2 at an applied voltage 12V, higher remnant Pr 30.5μC∕cm2 for a coercive field 58kV∕cm, about 81.2% 1010 switching cycles, low leakage current density 10−8A∕cm2 3V. etching...
ABSTRACT A compact model for description of the ferroelectric hysteresis loop behavior based on dipole switching theory was derived. cell crystal is just as an equivalent dipole, so characteristic ferroelecticity polarization in electric field. The simulation results show good agreement with experiment data various hystersis loops. Therefore can be used both circuit and provide better intuition into material behavior.
A study of the variation magnetoresistance in radio frequency magnetron sputtered CoFe/Cu/NiFe tri-layered thin films with thickness tCu and substrate temperature (Ts) is performed. The measured for fields applied parallel to current at room temperature. dependence on indicates presence an oscillatory interlayer exchange coupling through Cu layers a period about 1.1 nm. increased as decreased. increase considered be caused by improvement sharpness interfaces. result that interfacial...
La 2/3 Ca 1/3 MnO 3 (LCMO) thin films with the thickness from 4 nm to 50 were fabricated by off-axis magnetron sputtering technique. Single crystal (001) SrTiO (STO), (0001) sapphire (ALO), and yttrium-stabilized ZrO 2 (YSZ) used as substrates. The surface morphology of was characterized atomic force microscope (AFM). depends on thickness. Thin STO substrates less than 20 show a wave-like morphology, which indicates two-dimension growth mode. With increases, some cracks grains appear...