Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-04-19
2005-04-19
Rickman, Holly (Department: 1773)
Stock material or miscellaneous articles
Composite
Of inorganic material
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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Lu Bin
Weller Dieter K.
Lenart, Esq. Robert P.
Pietragello, Bosick & Gordon
Rickman Holly
Seagate Technology LLC
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