Perpendicular magnetic recording medium

Details Perpendicular magnetic recording medium Perpendicular magnetic recording medium

1986-03-25

1989-01-17

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428611, 428662, 428668, 428678, 428694, 428900, 428928, 4284735, G11B 566

Patent

active

047987650

ABSTRACT:
A perpendicular magnetic recording medium comprises a recording medium base, a lower layer formed on the recording medium base, and an upper layer formed on the lower layer. The lower layer is made of a first material including cobalt, chromium and one or more elements other than cobalt and chromium. On the other hand, the upper layer is made of a second material including cobalt, chromium and one or more elements other than cobalt and chromium. A quantity of the one or more elements added to cobalt and chromium making up the second material is less than a quantity of the one or more elements added to cobalt and chromium making up the first material.

REFERENCES:
patent: 4550062 (1985-10-01), Takayama et al.
patent: 4576700 (1986-03-01), Kadokura et al.
patent: 4603091 (1986-07-01), Mwkasu et al.
Gill, et al., "The Growth Characteristics of Ion-Beam Sputtered CoCr Films on Ta Isolation Layers", IEEE Transactions on Magnetics, vol-MAG-20, Sep. 1984, p. 776.
"Initial Layer Effects in Co-Cr Films", by Edward R. Wuori and Professor J. H. Judy, IEEE Transactions on Magnetics, vol. MAG-20, No. 5, Sep. 1984, pp. 774-775.
"VSM Profiling of CoCr Films: A New Analytical Technique":, by William G. Haines, IEEE Transactions on Magnetics, vol. MAG-20, No. 5, Sep. 1984, pp. 812-814.
Japanese Laid-Open Patent Application No. 59-65416.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2413309