Anisotropic Sm-Co/α-Fe Thick-Film Magnets Prepared by Two-Step Annealing
| Autor: | Yuya Furukawa, Hirotoshi Fukunaga, Takeshi Yanai, Hiroaki Koga, Masaki Nakano |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Nanocomposite Materials science Magnetic domain Annealing (metallurgy) Analytical chemistry 02 engineering and technology Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Electronic Optical and Magnetic Materials Magnetization Magnetic anisotropy Nuclear magnetic resonance Remanence 0103 physical sciences 0210 nano-technology Anisotropy |
| Zdroj: | IEEE Magnetics Letters. 8:1-4 |
| ISSN: | 1949-3088 1949-307X |
| Popis: | We synthesized anisotropic Sm-Co and multi-layered Sm-Co/α-Fe nanocomposite thick-film magnets by post-annealing. The films were deposited on a Ta substrate at 200-300 °C, and then were post-annealed at 600 °C for magnetic hardening. The annealed Sm-Co films were mainly composed of SmCo 5 and had in-plane magnetic anisotropy. The magnetic anisotropy energy of the films was estimated from the in-plane and out-of-plane magnetization curves to be approximately 650 kJ/m 3 for the film deposited at 200 °C. Multi-layered Sm-Co/α-Fe films also exhibited anisotropic hysteresis loops and had coercivity of 250 kA/m. These results suggest that two-step annealing enables us to synthesize anisotropic Sm-Co/α-Fe thick nanocomposite films. |
| Databáze: | OpenAIRE |
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