Journal of the Magnetics Society of Japan
Online ISSN : 1882-2932
Print ISSN : 1882-2924
稲垣 慶曽根原 誠佐藤 敏郎山沢 清人三浦 義正
ジャーナル オープンアクセス

33 巻 (2009) 1 号 p. 9-14

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Slit-patterned Mn-Ir/Fe-Si exchange-coupled film was annealed under an applied dc magnetic field in vacuum, and its magnetic properties were then evaluated. When a film without slits was annealed, the saturation field Hs in the hard axis direction decreased with increasing annealing temperature, and the ferromagnetic resonance frequency after annealing was lower than that before. On the other hand, when the slit-patterned film was annealed, the saturation field Hs after annealing was larger than that of the film without slits, due to the effect of a shape anisotropy field. In addition, the ferromagnetic resonance frequency changed very little with the annealing temperature. Hence, on account of the shape anisotropy resulting from the introduction of slits, Mn-Ir/Fe-Si exchange-coupled film has a higher FMR frequency. It will be applicable in device fabrication that includes thermal processes because of its uniaxial anisotropy, which includes shape anisotropy that is not influenced by thermal processes.

© 2009 (社)日本磁気学会
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