Magnetic medium having a soft underlayer with a magnetic...

Details Magnetic medium having a soft underlayer with a magnetic... Magnetic medium having a soft underlayer with a magnetic...

2006-12-22

2008-12-16

Evans, Jefferson (Department: 2627)

Dynamic magnetic information storage or retrieval

Record medium

Disk

Reexamination Certificate

active

07466515

ABSTRACT:
A magnetic medium for perpendicular magnetic data recording. The magnetic medium has a magnetically soft under-layer and a magnetically harder top layer. The magnetic under-layer has a magnetic anisotropy that is oriented in a radial direction relative to the magnetic medium. The magnetic anisotropy is induced by an anisotropic texture on the surface of the magnetic underlayer.

REFERENCES:
patent: 2002/0114105 (2002-08-01), Yokohata et al.
patent: 2004/0072022 (2004-04-01), Kanbe et al.
patent: 2004/0072036 (2004-04-01), Kubota et al.
patent: 2005/0008822 (2005-01-01), Miyamoto et al.
patent: 2005/0089726 (2005-04-01), Abarra
patent: 2006/0139799 (2006-06-01), Wu et al.
patent: 2007/0039922 (2007-02-01), Wachenschwanz et al.
patent: 2008/0020238 (2008-01-01), Tanaka et al.

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