A5050819344- ZnO doping and properties
- Multiferroics and related materials
- Ga2O3 and related materials
- Copper-based nanomaterials and applications
- Ferroelectric and Piezoelectric Materials
- Magnetic and transport properties of perovskites and related materials
- Dielectric properties of ceramics
- Characterization and Applications of Magnetic Nanoparticles
- MXene and MAX Phase Materials
- Heusler alloys: electronic and magnetic properties
- Magneto-Optical Properties and Applications
- Advanced Condensed Matter Physics
- Magnetic properties of thin films
University of Science and Technology Beijing
2011-2021
South China Normal University
2020-2021
Materials Science & Engineering
2015
Ferrimagnetic ${\mathrm{Y}}_{3}{\mathrm{Fe}}_{5}{\mathrm{O}}_{12}$ (YIG) is the prototypical material for studying magnonic properties due to its exceptionally low damping. By substituting yttrium with rare earth elements that have a net magnetic moment, we can introduce an additional spin degree of freedom. Here, study coupling in epitaxial ${\mathrm{Y}}_{3}{\mathrm{Fe}}_{5}{\mathrm{O}}_{12}$/${\mathrm{Gd}}_{3}{\mathrm{Fe}}_{5}{\mathrm{O}}_{12}$ (YIG/GIG) heterostructures grown by pulsed...
We have studied the room temperature ferromagnetism (FM) in Cu-doped and (Cu, Al) co-doped ZnO thin films which were grown on quartz substrates by chemical method based a sol-gel process combining with spin-coating technology. X-ray diffraction (XRD) patterns demonstrate that both hexagonal wurtzite structure c-axis orientation. Alternating Gradient Magnetometer (AGM) measurements confirm all doped samples are ferromagnetic at temperature. When Cu content is 1 %, film has strongest FM. The...
Here we report our study on the lithium-doped ZnO films prepared by sol-gel method. The are polycrystalline wurtzite structure and average particle size is about 50 nm. All ferromagnetic, film with Li content of 8 at. % has largest saturation magnetization 55 memu/g. photoluminescence spectra show that have weak emission near ultraviolet region strong in visible regions. atoms Zn sites can induce vacancies a low acceptor level energy gap, which required for ferromagnetism. first-principles...
In this paper, the plane wave ultra-soft pseudopotential method was performed to analyze effect of neutral Zn vacancy (V[Formula: see text]) and O on electronic magnetic properties Mn-doped ZnO systems. a [Formula: text] ZnO:Mn supercell, sites V[Formula: were set as nearest neighbor, next neighbor far relative Mn site, respectively. The results indicated that is easier be produced than in system, both kinds defects are more likely generated site. Meanwhile, ZnO:Mn-V[Formula: system p-type...
Recently, a tetragonal-like phase BiFeO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (BFO) has been made by utilizing highly mismatched LaAlO (LAO)[1]. However, significant contribution from the leakage current make great difficulty for direct experimental observation of ferroelectric hysteresis loop [1]. Here, BaTiO (BTO) was epitaxially grown on T-phase BFO/BTO (i.e., BFO film (001) oriented LAO substrate) to act as buffer layer,...
Electric-Field-Control of magnetism using BiFeO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> -based heterostructures is attracting a great amount research interest. (BFO) has outstanding ferroelectric properties and G-type antiferromagnetic ordering in the bulk. BFO also relatively high Curie temperature (T xmlns:xlink="http://www.w3.org/1999/xlink">C</sub> ~1100K), Neel xmlns:xlink="http://www.w3.org/1999/xlink">N</sub> ~640K),...
In this paper, we present the experimental results of dual-synthetic antiferromagnets (DSyAFs) with Co2FeAl (CFA) Heusler electrodes. It is shown that when thicknesses Ru layers are (0.45, 0.65) and 1.00) (in nm), CFA-based DSyAFs have a strong synthetic antiferromagnetic coupling among three CFA at room temperature, large saturation magnetic field Hs ~11000 Oe, low magnetization Ms ~708 emu/cm3 switching Hsw ~2.0 respectively. exciting an excellent thermal stability up to 400 °C. Therefore,...
The electronic and magnetic properties of (Cu, N) co-doped zinc oxide (ZnO) with different Cu:N ratios 1:2, 1:1 2:1 have been studied based on the density functional theory. Mono-doping Cu or N into ZnO keeps its direct band gap semiconductor nature exhibits [Formula: see text]-type conduction, half-metallic for valance merging below acceptor levels in a spin direction. However, co-doping greatly enhances conductivity system makes it exhibit metallic properties, become more obvious as ratio...