Magnetization of medium in perpendicular recording with narrow trackwidth head

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Other Title
  • 狭トラックス垂直記録における媒体磁化状態
  • 狭トラック垂直記録における媒体磁化状態
  • キョウトラック スイチョク キロク ニ オケル バイタイ ジカ ジョウタイ

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Description

We investigated the effect of erased magnetization of the medium on the recorded patterns for a FIB-trimmed narrow tracwidth single pole head. MFM images of the recorded patterns of the double-layered medium written on the different erased states were observed. The difference of widths of the recorded bits between polarities of magnetization was suppressed for the ac-erased state compared with the dc-erased state. This is because of the little influence of the field from the adjacent magnetization of the recorded track on the head field for the ac-erased state. It is expected the higher track density could be achieved for the ac-erased state because of effectively wide read width for a given trakwidth in the wide write-narrow read system.

Journal

  • ITE Technical Report

    ITE Technical Report 24.32 (0), 13-18, 2000

    The Institute of Image Information and Television Engineers

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