Perpendicular magnetic recording head utilizing a...

Details Perpendicular magnetic recording head utilizing a... Perpendicular magnetic recording head utilizing a...

2011-03-22

2011-03-22

Watko, Julie Anne (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Gap spacer

C360S125090, C029S603120

Reexamination Certificate

active

07911735

ABSTRACT:
The method and system for providing a perpendicular magnetic recording (PMR) head are described. The PMR head includes a base layer, a nonmagnetic metal underlayer on the base layer, and a PMR pole on the nonmagnetic metal underlayer. The PMR pole has a top that is wider than its bottom. The base layer has a first hardness with respect to a pole trim. The nonmagnetic metal underlayer has a second hardness with respect to the pole trim. The second hardness is less than the first hardness.

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