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Recording characteristics of perpendicular magnetic hard disk measured by nonflying single-pole head

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4 Author(s)
Nakamura, Y. ; Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan ; Ouchi, Kazuhiro ; Yamamoto, S. ; Watanabe, I.

A contact recording experiment using perpendicular magnetic hard disks was conducted with a nonflying single-pole-type magnetic head to investigate the practical feasibility of extremely high-density magnetic recording. A single-pole head produces an ideally sharp field distribution because of a strong head-medium magnetic interaction; hence, an isolated magnetization transition in perpendicular magnetic recording becomes much sharper than that in longitudinal recording at a narrower head-medium spacing. A much better durability of hard disks and heads due to a much smoother surface of the disk was also confirmed

Published in:

Magnetics, IEEE Transactions on  (Volume:26 ,  Issue: 5 )

Date of Publication:

Sep 1990

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