High-coercivity thin-film recording medium and method

Details High-coercivity thin-film recording medium and method High-coercivity thin-film recording medium and method

1990-08-15

1991-04-02

Dean, R.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having magnetic properties, or preformed fiber orientation...

428621, 428630, 428651, 428667, G11B 562, G11B 570, G11B 566

Patent

active

050046527

ABSTRACT:
A high-coercivity thin-film magnetic recording medium, and method of producing the medium, is disclosed. The medium has a sputtered chromium underlayer, preferably about 600-1,000 .ANG. thick, and a sputtered magnetic layer, preferably about 200-800 .ANG. thick, composed of an alloy containing between 70-80% cobalt, 10-20% chromium, 8-20% platinum, and 2-10% tantalum, formed on the chromium underlayer. The medium is characterized by high coercivity, resolution, amplitude and loop squareness value, and low bit shift.

REFERENCES:
patent: 4610911 (1986-09-01), Opfar et al.
patent: 4666788 (1987-05-01), Kadokura et al.
patent: 4833019 (1989-05-01), Suwarnasarn
patent: 4929514 (1990-05-01), Natorajan et al.
patent: 4950548 (1990-08-01), Furusawa

Affiliated with

Also associated with

Rating

High-coercivity thin-film recording medium and method 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-coercivity thin-film recording medium and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-coercivity thin-film recording medium and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-326289