Read/write track fringe effect of thin film and mr heads with different pole shapes

Terumitsu Tanaka, Kohei Wakamiya, Toshiyuki Suzuki

研究成果: ジャーナルへの寄稿学術誌査読


Measuring the cross-track profiles of a microtrack created by DC erasing both sides of a recorded track, the linear recording density dependence of the written track fringe width and that of the read track fringe width were successfully separated, both of which are usually observed in combination. It was clarified that when a thin-film head is used for reading, the read track fringe width increases as the linear recording density decreases, whereas it remains almost constant when an MR head with wide shielding layers is used. It was also clarified that the record head fringe width for a thin-film inductive head is less dependent on the linear recording density. The effects of several heads with different pole shapes on track edge phenomena were also evaluated, by partially DC erasing a written track from the track edge and measuring the change in the residual track output. It was found that the fringe field width of a record head changes depending on the pole shape, and the trimming of record head poles is very effective in reducing head field fringe effects.

ジャーナルIEICE Transactions on Electronics
出版ステータス出版済み - 1月 1 1999

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学


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