Magnetic recording medium, method of manufacture therefor,...

Details Magnetic recording medium, method of manufacture therefor,... Magnetic recording medium, method of manufacture therefor,...

2006-11-21

2006-11-21

Rickman, Holly (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S832000, C427S131000

Reexamination Certificate

active

07138194

ABSTRACT:
The magnetic recording medium comprises a soft magnetic undercoat film, an orientation control film that controls the orientation of a film provided directly above, a perpendicular magnetic film of which axis of easy magnetization is generally oriented perpendicular to a non-magnetic substrate, and a protective film, that are provided on the non-magnetic substrate, wherein the orientation control film is made of a Co alloy which contains one or more elements selected from Ti, V, Sr, Y, Nb, Mo, Hf, Ta, Ni and W.

REFERENCES:
patent: 5815342 (1998-09-01), Akiyama et al.
patent: 6403203 (2002-06-01), Futamoto et al.
patent: 6524724 (2003-02-01), Cheng et al.
patent: 6537638 (2003-03-01), Do et al.
patent: 6670055 (2003-12-01), Tomiyasu et al.
patent: 6723457 (2004-04-01), Tanahashi et al.
patent: 2004/0013909 (2004-01-01), Shimizu et al.

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