Effect of antiferromagnetic grain size on exchange anisotropy in Ni-Fe/25 at% Ni-Mn films
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概要
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The correlation between the antiferromagnetic (AF) grain volume, ν_<AF> and the exchange anisotropy is discussed for Ni-Fe/25 at% Ni-Mn system. In spite of various thickness combination of ferromagnetic (F) and AF layers, the unidirectional anisotropy constant, J_k commonly became large and saturated with increasing ν_<AF>.The substantial coercivity originated from the AF layer decreased and became constant with increasing ν_<AF>. These experimental results were well explained by a simple model based on Meiklejohn's single spin model. We concluded that increasing ν_<AF> is key to induce the exchange anisotropy effectively in F/AF bilayers.
- 社団法人日本磁気学会の論文
- 1999-01-20
著者
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TSUNODA Masakiyo
Department of Electronic Engineering, Tohoku University
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Tsunoda Masakiyo
Department Of Electronic Engineering Graduate School Of Engineering Tohoku University
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Takahashi Masatoshi
Division Of Dental Biomaterials Tohoku University Graduate School Of Dentistry
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TAKAHASHI Migaku
Department of Electronic Engineering, Faculty of Engineering, Tohoku University
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Takahashi M
Division Of Dental Biomaterials Graduate School Of Dentistry Tohoku University
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Takahashi Migaku
Department Of Electronic Engineering Tohoku University
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Takahashi Migaku
Department Of Electronic Engineering Graduate School Of Engineering Tohoku University
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