High areal density magnetic recording medium with dual magnetic

Details High areal density magnetic recording medium with dual magnetic High areal density magnetic recording medium with dual magnetic

1996-03-11

1998-06-09

Kiliman, Leszek

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428336, 428694T, 428694TS, 428694TP, 428694TC, 428694TM, 428900, G11B 566

Patent

active

057630712

ABSTRACT:
A magnetic recording medium having a high areal recording density of about 3 to about 20 Gb/in.sup.2, an Mrt of about 0.30 to about 0.60 memu/cm.sup.2, a coercivity greater than 2,500 Oersteds and a coercivity squareness of about 0.70 to about 0.95 is obtained by depositing one or more pairs of magnetic layers comprising a magnetically isotropic layer directly on a magnetically anisotropic layer. Chromium intermediate layers are employed to separate each pair of magnetically isotropic/anisotropic layers. In one embodiment, the magnetically anisotropic layer comprises a cobalt-base alloy containing chromium and tantalum and the magnetically isotropic layer comprises a cobalt-base layer containing chromium, platinum and tantalum.

REFERENCES:
patent: 3047423 (1962-07-01), Eggenberger et al.
patent: 3508887 (1970-04-01), Chezel et al.
patent: 4622273 (1986-11-01), Nakashima et al.
patent: 4642270 (1987-02-01), Morita et al.
patent: 4798765 (1989-01-01), Ishizaka et al.
patent: 5024903 (1991-06-01), Mizukami
patent: 5344706 (1994-09-01), Lambeth et al.
patent: 5432012 (1995-07-01), Lal et al.
patent: 5462796 (1995-10-01), Teng et al.
patent: 5536585 (1996-07-01), Futamoto et al.
Futamoto et al., "Investigation of 2 Gb/in.sup.2 Magnetic Recording at a Track Density of 17 kTPI," IEEE Transactions on Magnetics, vol. 27, No. 6, Nov. 1991, pp. 5280-5285.
Murdock et al., "Roadmap for 10 Gbit/in.sup.2 Media: Challenges," IEEE Transactions on Magnetics, vol. 28, No. 5, Sep. 1992, pp. 3078-3083.

Affiliated with

Also associated with

Rating

High areal density magnetic recording medium with dual 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 High areal density magnetic recording medium with dual magnetic , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High areal density magnetic recording medium with dual magnetic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2196908