Low inductance and high efficiency single-pole writing head for perpendicular double layer recording media

H. Muraoka, K. Sato, Y. Sugita, Y. Nakamura

研究成果: Article査読

46 被引用数 (Scopus)

抄録

A new type of thin film inductive single-pole head for perpendicular magnetic recording has been developed to provide a writing head for perpendicular double layer media. The head consisted of a main pole, three thin-film conductive layers to drive the pole and a return path pole. A low inductance of around 1.5 nH and a small saturation magneto-motive force of less than 0.025 AT 0.p was obtained. The D 50 was 180 kFRPI with an MR head of 210 nm shield separation. The error rate at 310 kFRPI was 10 6. Head induced erasure, which is an issue for the singlepole head, was also investigated by experiments and calculations. Around 10 % output reduction in 20 Oe stray field was confirmed. Computer simulation predicted an improvement by reducing the permeability of the medium's underlayer.

本文言語English
ページ(範囲)643-648
ページ数6
ジャーナルIEEE Transactions on Magnetics
35
2 PART 1
DOI
出版ステータスPublished - 1999
外部発表はい

ASJC Scopus subject areas

  • 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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