Finite-temperature dynamical and static properties of Nd magnets studied by an atomistic modeling
| Autor: | Ismail Enes Uysal, Masamichi Nishino, Taichi Hinokihara, Seiji Miyashita |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Surface (mathematics) Materials science Condensed matter physics Monte Carlo method Nucleation General Physics and Astronomy 02 engineering and technology Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Ferromagnetic resonance lcsh:QC1-999 Condensed Matter::Materials Science Domain wall (magnetism) Magnet 0103 physical sciences 0210 nano-technology Anisotropy lcsh:Physics |
| Zdroj: | AIP Advances, Vol 11, Iss 2, Pp 025102-025102-8 (2021) |
| ISSN: | 2158-3226 |
| Popis: | We investigate static and dynamical properties of the Nd permanent magnet, Nd2Fe14B, using a recently developed atomistic model. We show the temperature dependence of magnetizations and domain wall profiles by a Monte Carlo method. With the use of the stochastic Landau-Lifshitz-Gilbert method, we present an unusual temperature dependence of the ferromagnetic resonance frequency. By introducing a statistical method which extends the limitation of the simulation time, we estimate the coercive force of a single grain. We also show the surface anisotropy effect of Nd atoms on the coercive force and nucleation and pinning fields in a prototype hard-soft-hard magnet model. |
| Databáze: | OpenAIRE |
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