高周波キャリア型磁気ヘッド再生特性のシミュレーション解析

概要

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A two-step computer simulation using a two-dimensional finite element method was devised in order to handle the magnetic properties in high frequencies. The dynamic impedance variation rate of the high-carrier-frequency magnetic head, which corresponded to AM percentage modulation, was also proposed in order to estimate the reproduced output level of the head. The model of reproducing signal magnetization on a magnetic recording medium using a ring-type magnetic head, which included the high-carrier-frequency sensor in part of the magnetic path, was calculated by the two-step computer simulation method. Large dynamic impedance variation rates of 10 to 28 % were obtained in reproducing the signal magnetization of the 0.1-to 2.0-μm record wavelength. This indicated the possibility of a high-carrier-frequency magnetic head for 100 Obits/in^2.
社団法人日本磁気学会の論文
2001-04-15