Perpendicular-magnetic recording media and magnetic...

Details Perpendicular-magnetic recording media and magnetic... Perpendicular-magnetic recording media and magnetic...

2005-02-08

2005-02-08

Nakarani, D. S. (Department: 1773)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C428S690000, C428S690000, C428S690000, C428S690000

Reexamination Certificate

active

06852398

ABSTRACT:
The present invention relates to perpendicular magnetic recording media using a ferromagnetic film provided with perpendicular magnetic anisotropy for a recording layer and a magnetic recording apparatus using the media, and the object is to provide the perpendicular magnetic recording media which are excellent in signal to noise ratio (S/N) in a large recording density region, which are stable against thermal fluctuation and which can be easily manufactured, and the magnetic recording apparatus using the media. The representative perpendicular magnetic recording media according to the invention include a glass substrate, a first recording layer which is provided on the substrate via an underlayer, which has perpendicular magnetic anisotropy and the magnitude of magnetic exchange interaction between grains of which is substantially zero and a second recording layer which is laminated on the first recording layer, which is provided with perpendicular magnetic anisotropy and the magnetic exchange interaction between grains of which is larger than that of the first recording layer.

REFERENCES:
patent: 5792564 (1998-08-01), Hikosaka et al.
patent: 57-109127 (1982-07-01), None
patent: 07-176027 (1995-07-01), None
patent: 9-91660 (1997-04-01), None
patent: 10-079307 (1998-03-01), None
patent: 10-334440 (1998-12-01), None
patent: 11-102510 (1999-04-01), None
patent: 11-283230 (1999-10-01), None
Journal of Japanese Applied Magnetics, vol. 9, No. 2, 1985, pp. 57-60.
IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988, pp. 2706-2708.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3488445