Corrosion resistant magnetic recording media

Details Corrosion resistant magnetic recording media Corrosion resistant magnetic recording media

1978-10-30

1981-01-13

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Having magnetic properties, or preformed fiber orientation...

365171, 428678, 428681, 428928, B32B 1504

Patent

active

042450080

ABSTRACT:
A thin film magnetic recording medium for deposition on a record carrier includes a ferromagnetic alloy containing iron, cobalt and chromium. The ferromagnetic alloy consists of from 0-55% cobalt, from 8-22% of chromium with the remainder iron. The preferred range of chromium is from 10-18%. The magnetic recording layer is vacuum deposited over an extended portion of a record carrier for storing information which is represented by the spatial distribution of magnetic transitions in the magnetic layer. The iron-cobalt-chromium or iron-chromium composition according to this invention, gives the best magnetic properties consistent with excellent corrosion resistance.

REFERENCES:
patent: 3206325 (1965-09-01), Averbach
patent: 3588764 (1971-06-01), Olsen et al.
patent: 4028144 (1977-06-01), Tomishima et al.
patent: 4079169 (1978-03-01), Nigh et al.
Bozorth, R. M., Ferromagnetism, D. Van Nostrand Co., N.Y., pp. 226-227, (1951).

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