Perpendicular magnetic recording medium and manufacturing...

Details Perpendicular magnetic recording medium and manufacturing... Perpendicular magnetic recording medium and manufacturing...

2006-05-16

2006-05-16

Rickman, Holly (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C427S130000

Reexamination Certificate

active

07045225

ABSTRACT:
A perpendicular magnetic recording suitable for mass production and having suppressed spike noise has at least a seed layer, an orientation controlling layer, an antiferromagnetic layer, a soft magnetic layer, a magnetic recording layer, a protective layer, and a liquid lubricant layer formed on a nonmagnetic substrate. The orientation controlling layer is composed of a material comprising at least Ni and Fe, and having at least one element selected from the group consisting of B, Nb, and Si. The seed layer is composed of Ta. Further, after depositing the antiferromagnetic layer and the soft magnetic layer, but before depositing the magnetic recording layer, the substrate is heated to a blocking temperature or higher, and thereafter cooled to the blocking temperature or below while applying a static magnetic field in a radial direction of the substrate.

REFERENCES:
patent: 4632883 (1986-12-01), Howard et al.
patent: 2002/0127433 (2002-09-01), Shimizu et al.
patent: 2004/0110034 (2004-06-01), Kawada
patent: 2004/0247945 (2004-12-01), Chen et al.
patent: 6-180834 (1994-06-01), None
patent: 10-214719 (1998-08-01), None
patent: 2002-312925 (2002-10-01), None
Machine translation of JP 1001-312925, Oct. 2002.

Affiliated with

Also associated with

Rating

Perpendicular magnetic recording medium and manufacturing... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Perpendicular magnetic recording medium and manufacturing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perpendicular magnetic recording medium and manufacturing... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3527737