MRヘッドの再生特性に及ぼす永久磁石膜形状の影響

DOI NDLデジタルコレクション Web Site 被引用文献1件 参考文献14件

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タイトル別名
  • Influence of Permanent Magnet Film Structures on the Read Characteristics of MR Heads
  • MR ヘッド ノ サイセイ トクセイ ニ オヨボス エイキュウ ジシャク マク

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The output fluctuations of magnetoresistive (MR) heads with abutted permanent magnets were analyzed by micro-magnetic simulation. The longitudinal bias field was calculated from the magnetization configuration of the permanent magnet (PM) film. The output fluctuation of the MR head was simulated by using the longitudinal bias field, which was calculated with various interface structures between the MR and PM films. When the PM film covered the track edge of the MR capping layer, the longitudinal bias field near the track edge was locally reduced. The local reduction of the bias field was caused by an extra field generated by a charge appearing at the edge of the region where the PM film overlaps the capping layer. It is proved that an MR head with a PM film covering the edge of the capping layer shows output fluctuation, whereas the output is stable when the PM film does not cover the capping layer.

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