Wd Media, LLC

Komag Corporation

James L Chao

Gerardo Bertero

Andrew M Homola

David Treves

Christopher H Bajorek

David E Wachenschwanz

A method of forming a discrete track recording pattern on a soft magnetic underlayer of a perpendicular magnetic recording disk. In one embodiment, the soft magnetic underlayer is continuous throughout the discrete track recording pattern.

Perpendicular magnetic recording disk with a soft magnetic layer having a discrete track recording pattern

Perpendicular magnetic discrete track recording disk

A method of forming a discrete track recording pattern in a magnetic recording disk. In one embodiment, the discrete track recording pattern may be formed in a NiP layer continuous throughout the discrete track recording pattern. Alternatively, the discrete track recording pattern may be formed in a substrate.

Method of fabricating a magnetic discrete track recording disk

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Fremont, CA, United States of America

James L Chao