Perpendicular magnetic recording medium and magnetic...

Details Perpendicular magnetic recording medium and magnetic... Perpendicular magnetic recording medium and magnetic...

2005-06-07

2005-06-07

Rickman, Holly (Department: 1773)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S690000, C428S336000

Reexamination Certificate

active

06902835

ABSTRACT:
A double layered perpendicular recording media having, between a soft magnetic layer and perpendicular magnetic recording layer, an alignment control layer containing an amorphous portion, a crystal size control layer, and an underlayer having one of a hexagonal closest packed structure and a face-centered cubic structure.

REFERENCES:
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patent: 2003/0064253 (2003-04-01), Uwazumi et al.
patent: 11-306532 (1999-11-01), None
patent: 2001-6158 (2001-01-01), None
patent: 2002-74648 (2002-03-01), None
Saito et al., “Magnetic Properties and Microstructure of CoCrPtB Perpendicular Thin-Film Media with a Co80Cr40Layer and a Very Thin C Layer,” Academic Journal of Society for Applied Magnetics, vol. 26, No. 4, 2002.
Japanese Office Action, dated Aug. 24, 2004 for Patent Application No. 2002-184635.

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