Title: Perpendicular magnetic recording write head design

Authors: Michael Mallary, Mourad Benakli

Addresses: Seagate Technology, 1251 Waterfront Pl, Pittsburgh, Pa 15222, USA. ' Seagate Technology, 1251 Waterfront Pl, Pittsburgh, Pa 15222, USA

Abstract: Scaling down recording geometric parameters to achieve higher bit density has resulted in a media thermal stability crisis. This is motivating the change over from longitudinal to perpendicular recording because of its greater thermal stability. The preferred write head for perpendicular recording is the shielded pole geometry which has a better write field gradient than the traditional monopole. These issues are discussed in detail.

Keywords: write heads; perpendicular magnetic recording; giant magnetoresistive; GMR; head design; thermal stability; shielded pole geometry.

DOI: 10.1504/IJPD.2008.017461

International Journal of Product Development, 2008 Vol.5 No.3/4, pp.226 - 237

Published online: 11 Mar 2008 *

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