Domain structures of Co-Zr-Nb amorphous main-pole film and characteristics of perpendicular magnetic recording.
- 1 January 1988
- journal article
- Published by The Magnetics Society of Japan in Journal of the Magnetics Society of Japan
- Vol. 12 (2) , 125-128
- https://doi.org/10.3379/jmsjmag.12.125
Abstract
Domain structures of Co-Zr-Nb amorphous film for main-poles of single-pole type perpendicular magnetic recording head have been observed with the Bitter method. A narrower Co-Zr-Nb main-pole having lower Hk shows the disordered domain structure near the tip in the remanent state. It causes lower and unstable sensitivity of the narrow-track single pole head. The rotation magnetization of main domains works dominantly in the magnetization of a stable main-pole. A stable and highly sensitive single-sided single pole head is obtained by using a shorter main pole having the aspect ratio of about 1, which shows an ordered and stable domain structure even in the remanent state.Keywords
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