Temperature-induced transition of magnetic anisotropy between in-plane and out-of-plane directions in GaMnAs film
| Autor: | Seul Ki Bac, Taehee Yoo, Xinyu Liu, Sangyeop Lee, Seonghoon Choi, Hakjoon Lee, Sanghoon Lee, Jacek K. Furdyna |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Physics Condensed matter physics Magnetic domain 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Magnetocrystalline anisotropy 01 natural sciences Magnetic susceptibility Condensed Matter::Materials Science Magnetic anisotropy Magnetization Exchange bias Magnetic shape-memory alloy 0103 physical sciences Materials Chemistry 0210 nano-technology Anisotropy |
| Zdroj: | Solid State Communications. 244:7-11 |
| ISSN: | 0038-1098 |
| DOI: | 10.1016/j.ssc.2016.06.009 |
| Popis: | We used the Hall effect and magnetization measurements to investigate the temperature dependence of the magnetic anisotropy of a ferromagnetic semiconductor GaMnAs film grown on a (001) GaAs substrate. The Hall effect was systematically measured by applying an external magnetic field within and normal to the film plane. The switching behavior of the magnetization during the reversal process revealed the coexistence of in-plane and out-of-plane magnetic anisotropies in the film. However, these two types of magnetic anisotropies strongly depended on the temperature. Specifically, the out-of-plane anisotropy was dominant in the low-temperature region (i.e., 3–10 K), whereas the in-plane anisotropy became dominant in the temperature region higher than 15 K. This temperature dependent change in the magnetic anisotropy was further confirmed using direct magnetization measurements. |
| Databáze: | OpenAIRE |
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