Magnetic Properties of Fe20Ni80/x/Fe70Co30 Multilayer with Nonmagnetic Interlayers

カテゴリ: 全国大会

論文No: 2-121

グループ名: 【全国大会】平成19年電気学会全国大会論文集

発行日: 2007/03/15

タイトル(英語): Magnetic Properties of Fe20Ni80/x/Fe70Co30 Multilayer with Nonmagnetic Interlayers

著者名: 村本 憲昭(Kyushu Kyoritsu University),野澤 忠生(Kyushu Kyoritsu University)

著者名(英語): Noriaki Muromoto(Kyushu Kyoritsu University),Tadao Nozawa(Kyushu Kyoritsu University)

キーワード: 強磁性薄膜|非磁性中間層|磁気異方性|磁気的相互作用|異方性磁界|磁気モ?メント

要約(日本語): The insertion of a nonmagnetic intermediate layer between Fe20Ni80 and Fe70Co30 layers is examined in order to clarify the magnetic anisotropy interaction between the ferromagnetic layers. An interlayer of Cu or Au of a few tens of lattice parameters in thickness does not retard the suppression of coercive force or increase in the anisotropy field of the Fe70Co30 film, whereas the insertion of an Si or SiO2 layer inhibits these effects. Certain interlayers are therefore suitable for use when the soft magnetization properties of the multilayer film are to be retained. The specific resistivity of the multilayer film is improved by a factor of 5 by insertion of 24 Fe70Co30 (18 Å) oxide interlayers, while retaining the magnetic anisotropy interaction between the top and bottom ferromagnetic layers. The insertion of a Mn interlayer is also found to enhance the soft magnetization effect due to magnetic anisotropy interaction. The maximum magnetization at high magnetizing force for a Fe20Ni80/{Fe70Co30/Mn}23/Fe20Ni80 multilayer is 15% higher than that for the Fe20Ni80/Fe70Co30 /Fe20Ni80 trilayer film.

原稿種別: 日本語

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