Perpendicular magnetic recording media with laminated...

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Reexamination Certificate

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C428S690000, C428S611000, C428S668000, C428S900000

Reexamination Certificate

active

06881503

ABSTRACT:
A perpendicular magnetic recording medium comprises a hard magnetic recording layer, a soft magnetic layer, and a non-magnetic intermediate layer between the hard magnetic recording-layer and the soft magnetic layer, wherein the hard magnetic recording layer includes an hcp-structured layer and a Co-alloy layer which may be either a Co3Pt-alloy layer or an hcp CoPt-based alloy layer positioned adjacent to the hcp-structured layer. A magnetic disc drive storage system that includes the perpendicular magnetic recording medium is also included.

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