A5045805567- Magnetic properties of thin films
- Magnetic Properties of Alloys
- Magnetic Properties and Applications
- 2D Materials and Applications
- Metallic Glasses and Amorphous Alloys
- Physics of Superconductivity and Magnetism
- MXene and MAX Phase Materials
- Graphene research and applications
- Shape Memory Alloy Transformations
- Chalcogenide Semiconductor Thin Films
- Theoretical and Computational Physics
- Hydrogen Storage and Materials
- Quantum Dots Synthesis And Properties
- Topological Materials and Phenomena
- Iron-based superconductors research
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Quantum and electron transport phenomena
Chungbuk National University
2022-2024
Zhejiang University
2019-2022
State Key Laboratory of Silicon Materials
2019-2022
Indian Institute of Technology Guwahati
2013-2019
University of South Africa
2019
Hangzhou Xixi hospital
2019
Two-dimensional (2D) Cr-based layered and non-layered materials such as CrI3, Cr2Ge2Te6, Cr2S3, CrSe, CrOX (X = Cl Br) have attracted considerable attention due to their potential application in spintronics. Despite few experimental studies, theoretical studies reported that 2D chromium dichalcogenide (CrS2) show unique properties valley polarization, piezoelectric coupling, phase dependent intrinsic magnetic properties. Here, we report for the first time synthesis of CrS2 flakes down...
Abstract 2D magnetic materials have been attracting enormous interest for both fundamental research and potential spintronic applications. Here, this work demonstrates the van der Waals epitaxial growth of air‐stable CrS 2 on mica substrate by chemical vapor deposition (CVD). The layered nature, high crystallinity, stoichiometry, high‐purity 1T phase individual crystallites are verified a series complementary characterization techniques including atomic force microscope, scanning...
We have unambiguously identified 7 phonon modes by helicity-dependent polarized Raman spectroscopy for CVD-grown 2D Cr 2 S 3 together with variation of temperature.
We report the investigation of temperature dependent magnetic properties FePt and FePt(30)/M(Cu,C)/Fe(5) trilayer thin films prepared by using magnetron sputtering technique at ambient postannealed different temperatures. L 1 0 ordering, hard properties, thermal stability are improved with increasing postannealing temperature. In FePt/M/Fe trilayer, formation interlayer exchange coupling between layers depends on materials interface morphology. FePt/C/Fe when C thickness was about 0.5 nm, a...
The authors report thickness dependent magneto-static and magneto-dynamic properties of amorphous Co40Fe40B20 films with thickness, t = 10–200 nm deposited on thermally oxidized Si substrates using magnetron sputtering technique at ambient temperature. Magnetic hysteresis loops ≤ 20 transformed from rectangular or flat type shape to transcritical nature for ≥ 50 nm. This is attributed a change in the magnetic domain structure in-plane magnetization uniaxial anisotropy thinner stripe domains...
Sm–Co(20 nm)/Fe(tFe) bilayers are fabricated with different Fe layer thicknesses (tFe = 0, 2, 4, 6 and 8 nm) in order to systematically investigate the intermixing effect between Sm–Co layers its influence on magnetic properties. X-ray diffraction analysis indicates that deposition of soft (Fe) promotes crystallization hard (Sm–Co) at a low annealing temperature (400 °C). The annealed films consist hexagonal Sm2Co7, Sm2Co17 SmCo5 phases bcc-structured Fe(Co) layer. Rutherford backscattering...
We report a systematic investigation of temperature dependent magnetic properties FePt single and FePt(30)/M/Fe(5) nanocomposite thin films prepared by sputtering technique on low cost substrates at ambient post annealed different temperatures. With increasing annealing temperature, L10 ordering, hard thermal stability are improved. The formation interlayer exchange coupling between soft layers in FePt/M(Al,Cu,C)/Fe depends strongly materials interface morphology. A strong was achieved when...
This study deals with tuning magnetic properties of a thick amorphous (a-)Co20Fe60B20 (CoFeB262) film by using interlayer coupling in trilayer structured films [CoFeB262 (100 nm)/[Cr,Ta (x nm)]/CoFeB262 (y nm)] y=2-50, xCr=0.75, 2 and xTa=1, 4. All the are deposited directly on thermally oxidized Si substrate at ambient temperature magnetron sputtering. The as-deposited a-CoFeB262 nm) exhibits stripe domain transcritical hysteresis loop due to large effective anisotropy caused stress induced...
Abstract Ultrafast control of both electric and spin currents triggered by femtosecond laser pulse has attracted much attention due to future applications for broadband THz emitter as well high‐speed spintronic devices. Optically generated current is converted charge via multiple spin‐charge conversion mechanisms, generating wave emission in magnetic multilayers. However, date, quantitative comparative investigation originating from mechanisms not yet been fully explored. Here, direct...
We report our systematic investigation of temperature-dependent Barkhausen volume behavior for CoFeB/Pd with perpendicular magnetic anisotropy by means magneto-optical Kerr microscopy. In the temperature range where two-dimensional (2D) Ising-like and single-domain features are sustained, hysteresis parameters such as coercivity, area, saturation magnetization quantitatively analyzed respect to temperature. Interestingly it is demonstrated that length directly proportional domain-wall width...
We performed experimental and theoretical investigations into the Raman optical phonon modes of hexagonal FeTe (h-FeTe) nanosheets, which is a two-dimensional yet nonlayered ferromagnetic material. Prior studies have reported two peaks at around 120 138 cm–1. Our helicity-dependent experiments reveal novel features: (i) peak cm–1 is, in fact, composite closely spaced located 137 142 cm–1, (ii) an additional mode appears 158 In our analysis, however, three upper 137, 142, are inherently...
We report a systematic investigation of structural and magnetic properties Mn-rich off-stoichiometric nano-crystalline Ni48.84Mn37.96Sn13.20 ferromagnetic shape memory alloy thin films, grown on Si (100) substrates at ambient temperature by dc magnetron sputtering. As-deposited films were amorphous in nature. Crystallization was induced progressively when the heat treated elevated temperatures. 1 h annealing 375 °C sufficient to induce crystallization stable L21 phase. paramagnetic They...
We report our experimental investigation on the temperature-dependent hysteresis loops and magnetic domain behaviors of CoFeB (0.4 nm)/Pd (1 nm) multilayer polyimide substrate with a perpendicular anisotropy, by means magneto-optical Kerr microscopy. Hysteresis characteristics such as saturation magnetization, coercivity, loop area respect to temperature have been analyzed, where powerlaw scaling are observed microscopic patterns mediated numerous nucleation sites.