Determination of perpendicular magnetic anisotropy based on the magnetic droplet nucleation
| Autor: | Takaya Okuno, Hiroki Yoshikawa, Arata Tsukamoto, Teruo Ono, Tomoe Nishimura, Takahiro Moriyama, Duck-Ho Kim, Yasuhiro Futakawa, Yoichi Shiota, Sanghoon Kim, Yuushou Hirata |
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| Rok vydání: | 2018 |
| Předmět: |
Range (particle radiation)
Droplet nucleation Materials science Physics and Astronomy (miscellaneous) Basis (linear algebra) Field (physics) Condensed matter physics General Engineering General Physics and Astronomy Linearity 02 engineering and technology Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field Magnetic anisotropy 0103 physical sciences 010306 general physics 0210 nano-technology |
| Zdroj: | Japanese Journal of Applied Physics. 57:050308 |
| ISSN: | 1347-4065 0021-4922 |
| Popis: | We propose an alternative method of determining the magnetic anisotropy field μ0 H K in ferro-/ferrimagnets. On the basis of the droplet nucleation model, there exists linearity between domain-wall (DW) energy density and in-plane magnetic field. We find that the slope is simply represented by μ0 H K and Dzyaloshinskii–Moriya interaction (DMI). By measuring the in-plane magnetic field dependence of the coercivity field, closely corresponding to the DW energy density, a robust value for μ0 H K can be quantified. This robust value can be used to determine μ0 H K over a wide range of values, overcoming the limitations caused by the small strength of the external magnetic field typically used in experiments. |
| Databáze: | OpenAIRE |
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