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.
International Journal of Product Development, 2008 Vol.5 No.3/4, pp.226 - 237
Published online: 11 Mar 2008 *
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