A5061654624- Magnetic properties of thin films
- High-Temperature Coating Behaviors
- ZnO doping and properties
- Ferroelectric and Negative Capacitance Devices
- Intermetallics and Advanced Alloy Properties
- Magnetic and transport properties of perovskites and related materials
- Gas Sensing Nanomaterials and Sensors
- Transition Metal Oxide Nanomaterials
- Catalytic Processes in Materials Science
- Nuclear Materials and Properties
- Ga2O3 and related materials
- Magnetic Properties and Applications
- Advanced Memory and Neural Computing
- Theoretical and Computational Physics
- Electron and X-Ray Spectroscopy Techniques
- Metallurgy and Material Science
- Characterization and Applications of Magnetic Nanoparticles
- Topological Materials and Phenomena
- Powder Metallurgy Techniques and Materials
- Corrosion Behavior and Inhibition
- Advanced ceramic materials synthesis
MAX IV Laboratory
2014-2024
Lanzhou University
2021-2022
Lund University
2014-2016
We report the simultaneous measurement of structural and electronic components metal-insulator transition (MIT) VO2 using electron photoelectron spectroscopies microscopies. show that these evolve over different temperature scales, are separated by an unusual monocliniclike metallic phase. Our results provide conclusive evidence new phase, recently identified in high-pressure nonequilibrium measurements, is accessible thermodynamic at ambient pressure, we discuss implications observations on...
Current pulse driven Néel vector rotation in metallic antiferromagnets is one of the most promising concepts antiferromagnetic spintronics. We show microscopically that epitaxial thin films prototypical compound Mn2Au can be reoriented reversibly complete area cross shaped device structures using single current pulses. The resulting domain pattern with aligned staggered magnetization long term stable enabling memory applications. achieve this switching low heating ≈20 K, which regarding fast...
Nanoscale detection and control of the magnetic order underpins a spectrum condensed-matter research device functionalities involving magnetism. The key principle involved is breaking time-reversal symmetry, which in ferromagnets generated by an internal magnetization. However, presence net magnetization limits scalability compatibility with phases, such as superconductors topological insulators. Recently, altermagnetism has been proposed solution to these restrictions, it shares enabling...
In antiferromagnetic spintronics, the read-out of staggered magnetization or Neel vector is key obstacle to harnessing ultra-fast dynamics and stability antiferromagnets for novel devices. Here, we demonstrate strong exchange coupling Mn2Au, a unique metallic antiferromagnet that exhibits spin-orbit torques, with thin ferromagnetic Permalloy layers. This allows us benefit from well-estabished methods ferromagnets, while essential advantages spintronics are retained. We show one-to-one...
X-ray photoelectron emission microscopy (XPEEM) was used in combination with other microscopic and spectroscopic techniques to follow the surface development of an aluminum brazing sheet during heating. The studied alloy is a composite material designed for vacuum brazing. Its covered native oxide film. Changes chemical state alloying elements composition layer were detected heating melting temperature. It found that Mg segregates upon heating, measurements indicate formation magnesium...
We observed an unusual double-shifted hysteresis loop in a perpendicular exchange-coupled Co/IrMn system at room temperature, which leads to uneven exchange bias field the positive and negative field. With thickness of antiferromagnetic layer ranging from 4.8 10.4 nm, is approximately 100 Oe larger than This result related density net spins that have pinned on ferromagnetic layer. In addition, this can be adjusted by magnetic annealing temperature.
We study the angle dependence of spin wave resonance spectra in FeNi–MgO granular films fabricated by magnetron sputtering, using ferromagnetic technology. Seven Portis-type resonances with same magnetic field spacing are observed when is perpendicular to film. By varying θH, we find that there at least two modes θH = 14°, indicating critical θc mode range 14°–15°. Furthermore, obtained exchange stiffness constant and distortion parameter through surface inhomogeneity model volume model....
Abstract Exchange bias (EB) has extremely important applications in spintronics, researchers have proposed various means to manipulate it. This work realizes the regulation of EB field Co/IrMn films sputtered on LiNbO 3 substrate by surface acoustic wave (SAW). The experimental results show that out-of-plane and in-plane films, both coercivity decrease with increase SAW power. dynamic strain provided transfer magnetic changes arrangement moments Co layer IrMn layer, rearrangement leads a...