Simulation of the Error Rate Performance of MR Heads with Tracking Servo

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  • Kikuchi K.
    Magnetic & Electronic Materials Research Laboratory, Hitachi Metals, Ltd.
  • Mitsumata C.
    Magnetic & Electronic Materials Research Laboratory, Hitachi Metals, Ltd.
  • Shimoe O.
    Magnetic & Electronic Materials Research Laboratory, Hitachi Metals, Ltd.

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  • トラックサーボ特性を考慮したMRヘッドのエラーレートの数値解析
  • トラック サーボ トクセイ オ コウリョシタ MR ヘッド ノ エラーレート

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The error rate performance of MR heads with tracking servo was investigated. The bathtub curves and the position error signal (PES) were computed by using the cross-track profile estimated by micromagnetic calculation. As the read-track width becomes smaller, the linearity of the PES becomes worse and the off-track tolerance from bathtub curves increases. Consequently, the error rate performance with tracking servo increases. As the track pitch becomes smaller, both the linearity of the PES and the error rate improve.

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