Ferromagnetic Resonance in [NiFeCo/Cu/Co]-Multilayers

Hideki Watanabe; Eiichi Hirota; Akira Okada; Kouichi Hamada; Iwao Ishida; Hiroshi Sakakima; Mitsuo Satomi

doi:10.1143/jpsj.63.762

Hideki Watanabe, Eiichi Hirota, Akira Okada, Kouichi Hamada, Iwao Ishida, Hiroshi Sakakima, Mitsuo Satomi

著者情報

キーワード: ferromagnetic resonance, giant magnetoresistance, multilayer, interlayer coupling, RKKY-like coupling, magnetization flopping

ジャーナル認証あり

1994 年 63 巻 2 号 p. 762-768

DOI https://doi.org/10.1143/jpsj.63.762

詳細

抄録

Ferromagnetic resonance (FRM) measurements were made on [Ni_0.8Fe_0.15Co_0.05/Cu/Co] multilayers in order to observe the coupling between ferromagnetic layers across Cu spacer. The resonant fields vary oscillatory with Cu spacer thickness. The FMR results were analyzed by the resonant model of a magnetically coupled two-layer system. By using a modified RKKY theory for interlayer exchange interaction and FMR results, the coupling constant, J, was determined as a function of Cu spacer thickness. The resonant field can be predicted for Cu spacer thickness and are well compared to the experimental values. In samples of antiferromagnetic coupling, the resonance mode of the magnetization flopping were observed at small applied fields.

責任著者(Corresponding author)

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