Analysis of write process considering thermal fluctuation in perpendicular magnetic recording

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Other Title
  • 垂直磁気記録方式における熱減磁を考慮した記録過程の解析
  • スイチョク ジキ キロク ホウシキ ニ オケル ネツ ゲンジ オ コウリョ シタ キロク カテイ ノ カイセキ

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Abstract

We analyzed the write process considering temperature and write frequency to determine the difference from the conventional self-consistent analysis. The extended Neel-Arrhenius type model with two different time constants for high and low energy barrier can approximate the coercive field versus frequency of hysteresis loop calculated by the method of Langevin equation. As the linear density becomes higher, the transition parameter becomes smaller and the amplitude of written pattern becomes larger compared to the superposition of the isolated transition.

Journal

  • ITE Technical Report

    ITE Technical Report 25.37 (0), 7-12, 2001

    The Institute of Image Information and Television Engineers

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