Ferromagnetic resonance studies of video tapes

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概要

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• The magnetic anisotropy fields (H_k=2K/M) and damping factors (α) of these kinds tapes of metal particle, oxide particle and metal-evaporated tapes for various home-use video systems were studied using 34GHz ferromagnetic resonance (FMR). The H_k is in the 3-8 kOe range and varies linearly with the value of coercive force (H_c). The α value of metal-evaporated tape is the largest (0.24), indicating the small crystallite size. The smallest α is oxide particle tape (0.10), indicating well-aligned particles. Although the switching parameter S_w/H_c tends to increase with 1/α in general way, the relation of S_w/H_c vs. 1/α is different in particulate tape and thin-film tape in precisely.

• 社団法人日本磁気学会の論文
• 1999-01-20

著者

• Tsuda T.

  Department of First Internal Medicine, Niigata University School of Medicine

• Kohmoto O.

  Department Of Physics Okayama University

• Kitamura H.

  Department of Physics, Okayama University

• Hanafusa T.

  Department of Physics, Okayama University

• Nakagawa Y.

  Department of Physics, Okayama University

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