Perpendicular magnetic recording media, manufacturing...

Details Perpendicular magnetic recording media, manufacturing... Perpendicular magnetic recording media, manufacturing...

2006-12-26

2006-12-26

Bashore, Alain L. (Department: 1762)

Coating processes

Direct application of electrical, magnetic, wave, or...

Magnetic field or force utilized

C427S598000, C427S128000, C428S690000, C428S690000, C428S900000, C428S065100, C428S065100

Reexamination Certificate

active

07153546

ABSTRACT:
Provided are a double-layer perpendicular magnetic recording medium having a high medium S/N at an areal recording density of 50 Gbits or more per square inch, and a magnetic storage apparatus having excellent reliability with a low error rate. The perpendicular magnetic recording medium is formed by sequentially laminating a domain control layer, an amorphous soft magnetic underlayer, an intermediate layer, and a perpendicular recording layer on a substrate. The domain control layer is a triple-layer film formed by laminating a first polycrystalline soft magnetic layer, a disordered antiferromagnetic layer, and a second polycrystalline soft magnetic layer from a substrate side.

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patent: 6841259 (2005-01-01), Takahashi et al.
patent: 2001/0038932 (2001-11-01), Uwazumi et al.
patent: 2002/0127433 (2002-09-01), Shimizu et al.
patent: 2001-155322 (1999-11-01), None

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