A5102717345- Magnetic Properties and Applications
- Magnetic properties of thin films
- Fusion materials and technologies
- Nuclear Materials and Properties
- Ion-surface interactions and analysis
- Microstructure and mechanical properties
- Geomagnetism and Paleomagnetism Studies
- High Temperature Alloys and Creep
- Solidification and crystal growth phenomena
- Laser-Plasma Interactions and Diagnostics
- Microstructure and Mechanical Properties of Steels
- Muon and positron interactions and applications
Beihang University
2020-2022
Institute of Applied Physics and Computational Mathematics
2022
Washington State University
2015-2019
Pacific Northwest National Laboratory
2014
Hysteretic behavior was studied in a series of Fe thin films, grown by molecular beam epitaxy, having different grain sizes and on substrates. Major minor loops first order reversal curves (FORCs) were collected to investigate magnetization mechanisms domain under magnetic histories. The loop coefficient major coercivity increase with decreasing size due higher defect concentration resisting wall movement. First allowed estimation the contribution irreversible reversible susceptibilities...
Understanding of the recrystallization kinetics tungsten plasma-facing materials under fusion-related conditions is crucial importance to estimate material lifetime and evolution properties such as strength/hardness thermal shock resistance. High-energy helium ion irradiation was used study effect produced by neutron tritium decay on recrystallization. Results indicate that low-concentration at about 40 appm retards without pronounced bubble formation. For a higher concentration helium, peak...
The use of nondestructive magnetic signatures for continuous monitoring the degradation structural materials in nuclear reactors is a promising yet challenging application advanced functional behavior modeling and measurement. In this work, numerical model, which based on Landau–Lifshitz–Gilbert equation magnetization dynamics phase field approach, was developed to study impact defects such as nonmagnetic precipitates and/or voids, free surfaces crystal orientation domain structures...
Multiphase magnetic systems are common in nature and increasingly being recognized technical applications. One characterization method which has shown great promise for determining separate collective effects of multiphase is first order reversal curves (FORCs). Several examples given FORC patterns provide distinguishing evidence multiple phases. In parallel, a visualization understanding interaction given, allocates Preisach elements as an input “Preisach hysteron distribution pattern” to...
Microstructures of magnetic materials, including defects and crystallographic orientations, are known to strongly influence domain structures. Measurement techniques such as force microscopy (MFM) thus allow study correlations between microstructural properties. The present work probes effects anisotropy artificial on the evolution structure with applied field. Single crystal iron thin films MgO substrates were milled by Focused Ion Beam (FIB) create different magnetically isolated squares...