Method and system for providing a PMR head having an...

Details Method and system for providing a PMR head having an... Method and system for providing a PMR head having an...

2011-03-22

2011-03-22

Renner, Craig A. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125130

Reexamination Certificate

active

07911737

ABSTRACT:
The method and system for providing a perpendicular magnetic recording (PMR) head are described. The method and system include providing a metal underlayer and a PMR pole on the metal underlayer. The metal underlayer is amorphous. The PMR pole has a bottom and a top wider than the bottom. The PMR pole includes at least a first ferromagnetic layer, a second ferromagnetic layer, and a third ferromagnetic layer. The first ferromagnetic layer is antiferromagnetically coupled with the second ferromagnetic layer. The second ferromagnetic layer is antiferromagnetically coupled with the third ferromagnetic layer.

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