A5050894911- Magnetic Properties and Synthesis of Ferrites
- Iron oxide chemistry and applications
- Multiferroics and related materials
- Magnetic and transport properties of perovskites and related materials
- Pigment Synthesis and Properties
- Magneto-Optical Properties and Applications
- Advanced Condensed Matter Physics
- Covalent Organic Framework Applications
- Magnetic properties of thin films
- Silicone and Siloxane Chemistry
- biodegradable polymer synthesis and properties
- Advanced Thermoelectric Materials and Devices
- Synthesis and Properties of Aromatic Compounds
- Advanced Photocatalysis Techniques
- Quantum-Dot Cellular Automata
- Dielectric materials and actuators
- Photovoltaic System Optimization Techniques
- Flame retardant materials and properties
- Thermal Expansion and Ionic Conductivity
- Energy Harvesting in Wireless Networks
- Thermal Radiation and Cooling Technologies
- Catalytic Processes in Materials Science
- Semiconductor materials and devices
- Ammonia Synthesis and Nitrogen Reduction
- Advancements in Battery Materials
Nanjing University of Science and Technology
2015-2024
China Academy of Space Technology
2019-2022
City University of Hong Kong
2021
Guangxi Normal University
2010-2019
There is a great demand for low dielectric materials as insulating interlayers in large-scale integrated circuit development.However, it still huge challenge to reduce the permittivity of polymers while maintaining excellent thermal stability and mechanical properties.In this work, fluorinated polyimides (PIs) combination with micro-branched crosslinking structure were prepared successfully by introducing different amounts 1,3,5-tris(4-aminophenyl) benzene (TAPB) obtain ultra-low...
Abstract Perpendicular exchange bias (EB), which combines perpendicular magnetic anisotropy and ferromagnetic (FM)–anti‐ferromagnetic (AFM) coupling, is extremely important in high‐density AFM spintronics. However, the effective modulation of EB remains challenging, since alternant spins at AFM/FM interface are strongly pinned by layer. Voltage tuning through magnetoelectric coupling provides a potential way to achieve rapid magnetization switching an energy‐efficient manner. Nevertheless,...
In this work, stoichiometric Ni0.6Cu0.2Zn0.2Ce(x)Fe2-xO4 ferrites with 0 ≤ x 0.85 have been prepared by Sol-Gel auto-combustion method and we investigated the effect of impurity CeO2 phase to microstructure hyperfine magnetic field in spinel ferrite. The results XRD patterns confirm that average crystallite size samples decreases Ce3+ substitution increasing lattice parameters vary as a function content. 57Fe Mössbuaer spectra at room temperature for all [Fe(3+)-O2-Fe3+] super exchange...
The micro-discharge effect is a failure mechanism that often appeared in space microwave devices under vacuum conditions, such as RF (radio frequency) cavity, satellite missile, and antenna launching communication system. How to control effectively simply has become research hotspot. In this paper, we have prepared series of doping silver (Ag)/carbon (C) composite films by double target magnetron sputtering technology significantly reduced the maximum secondary electron emission coefficient...
The surface adsorption of gas molecules is a key factor limiting the secondary electron yield (SEY) material in many areas applied physics. influence O 2 on SEY metallic Ag investigated this work. To account for particle distribution, we propose BET theory based multilayer physisorption model. Furthermore, phenomenological model (SE) emission and by taking into different scattering processes between electrons particles adsorbed layer, develop numerical state using Monte Carlo simulations....
Sm x Fe 2- O 4 nanoferrite Abstract.Samarium ion substituted magnesium of Ni 0.5 Zn 2-x spinel ferrite powders have been prepared by a sol-gel auto-combustion method.XRD results indicate that the production single cubic phase ferrites.Some particles are agglomerated due to presence magnetic interactions among particles.The Mössbauer spectra nanocrystalline at room temperature show interaction and interface atomic state were influenced strongly 3+ ratio, saturation magnetization largely also...
Zn 1-x Mn x Fe 2 O 4 (x=0, 0.15, 0.25, 0.35, 0.45, 0.55, 0.75, 0.85) ferrites were synthesized by sol-gel combustion method with citric acid as complexing agent, and mole ratio of metal ions is 1:1.All samples sintered 550˚C.The structural magnetic properties MnZn studied.The XRD analysis shows that the structure are cubic spinel ferrite.The SEM particles sphere agglomeration.The Mӧssbauer Spectrum paramagnetic double lines spctra gradually change Zeeman six spectra.
Perpendicular exchange bias (EB), which combines the perpendicular magnetic anisotropy and ferromagnetic (FM) - antiferromagnetic (AFM) coupling, is extremely important in high-density AFM spintronics. However, effective modulation of EB remains challenging, since alternant spins at AFM/FM interface are strongly pinned by layer. Voltage tuning through magnetoelectric coupling provides a potential way to achieve rapid magnetization switching an energy-efficient manner. Nevertheless,...
Doping at A/B-sites can effectively improve the physical properties of perovskite ferrites. In this study, performance Bi0.8Ca0.2-xSrxFeO3 was investigated using sol-gel autocombustion method. The results show that with an increase in x value, grain size first increases and then decreases. With doping concentration, reunion phenomenon reduces, but smoothness flatness samples are also destroyed. Moreover, increasing Sr2+ particle growth is inhibited, resulting smaller sizes. When...
MnO2 and LiFePO4/C composite materials were prepared by two-step sol-gel. The main peak patterns of lithium iron phosphate manganese dioxide appeared in the analysis phase structure materials. SEM shows that particle quality is obvious dispersion better, size mainly 168 nm. Magnetic hysteresis loops at room temperature show introduction causes saturated magnetization strength Ms (emu/g), residual Mr (emu/g) area (kOe emu/g) to increase with dioxide. Mossbauer spectrum indicates component...