Method of producing magnetic recording medium

Details Method of producing magnetic recording medium Method of producing magnetic recording medium

2006-11-28

2006-11-28

Bashore, Alain L. (Department: 1762)

Coating processes

Magnetic base or coating

Magnetic coating

C427S132000

Reexamination Certificate

active

07141272

ABSTRACT:
A method of producing a magnetic recording medium includes forming a underlayer on a base, and successively forming, on the underlayer, a first magnetic layer, a nonmagnetic coupling layer and a second magnetic layer. The first and second magnetic layers are exchange-coupled via the nonmagnetic coupling layer and have antiparallel magnetizations in a state where no external magnetic field is applied on the magnetic recording medium. The underlayer is made of Cr or a Cr alloy having a bcc crystal structure within an atmosphere including nitrogen gas.

REFERENCES:
patent: 5698312 (1997-12-01), Kashiwaya
patent: 6602612 (2003-08-01), Abarra et al.
patent: 6645646 (2003-11-01), Umeda et al.
patent: 6689495 (2004-02-01), Sato et al.
patent: 6761982 (2004-07-01), Sakawaki et al.
patent: 6787251 (2004-09-01), Wu et al.
patent: 6808830 (2004-10-01), Sakawaki et al.
patent: 6830837 (2004-12-01), Kanbe et al.
patent: 2002/0037440 (2002-03-01), Ono et al.
patent: 2003/0082410 (2003-05-01), Sato et al.
patent: 2003/0124390 (2003-07-01), Abarra et al.
patent: 2003/0180577 (2003-09-01), Do et al.
patent: 2004/0121185 (2004-06-01), Fukuzawa et al.
patent: 2005/0084716 (2005-04-01), Kanbe et al.
patent: 2000067423 (2000-03-01), None
patent: 2001056924 (2001-02-01), None
patent: 2002260208 (2002-09-01), None
patent: 2003085727 (2003-03-01), None
Yu, et al.; High-Density Longitudinal Recording Media with CrMoB Underlayer; IEEE Trans. on Magnetics, vol. 39, No. 5, pp. 2261-2263; Sep. 2003.

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