Magnetic recording medium and manufacturing method thereof

Details Magnetic recording medium and manufacturing method thereof Magnetic recording medium and manufacturing method thereof

2006-03-21

2006-03-21

Rickman, Holly (Department: 1773)

Coating processes

Magnetic base or coating

Magnetic coating

C427S130000, C427S131000

Reexamination Certificate

active

07014882

ABSTRACT:
A high-density magnetic recording medium uses a nonmetallic substrate, while still providing high in-plane magnetic anisotropy and remanent coercivity. Such a medium can be formed by depositing a seed layer on a textured surface of the nonmetallic substrate in a gas mixture containing oxygen or nitrogen and an inert gas, while controlling the oxygen concentration or nitrogen concentration, and subsequently exposing the surface of the seed layer to oxygen or nitrogen.

REFERENCES:
patent: 5879783 (1999-03-01), Chang et al.
patent: 2003/0199680 (2003-10-01), Sakawaki et al.
patent: 2001-331934 (2001-11-01), None
“Effects of Surface Oxidation of Amorphous Ni-Based Alloy Seed Layers on Noise in CoCrPt/CrTi Media”; Matsuda et al.; IEEE Transactions on Magnetics, vol. 37, No. 4; Jul. 2001;pp. 3053-3055.

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