Zero magnetostriction Fe-Co-Cr magnetic recording media

Details Zero magnetostriction Fe-Co-Cr magnetic recording media Zero magnetostriction Fe-Co-Cr magnetic recording media

1980-12-31

1983-08-02

Sheehan, John P.

Alloys or metallic compositions

Cobalt base

Chromium containing

428606, 365171, 148 3155, C22C 1905

Patent

active

043965750

ABSTRACT:
A low or zero magnetostriction ferromagnetic alloy is used for a magnetic recording medium. The alloy is (Fe.sub.y Co.sub.1-y).sub.1-x Cr.sub.x where y (Fe) is preferably 15-23 atomic percent of the FeCo part of the alloy. The value of x (Cr) is 7-20 atomic percent of the alloy and the remainder 1-x (FeCo) is 83-92 atomic percent of the alloy. The maximum ranges of the composition of the alloy are about as follows:

REFERENCES:
patent: 2244517 (1941-06-01), de Golyer et al.
patent: 3614893 (1967-10-01), Nesbitt et al.
patent: 4034588 (1977-07-01), Way et al.
patent: 4054723 (1977-10-01), Higginbothan et al.
patent: 4245008 (1981-01-01), Michaelson et al.
Klokholm et al, "Sputtering FeCoCr Thin Film Magnetic Media", IBM Technical Disclosure Bulletin, vol. 21, No. 10, Mar. 1979, p. 4241.

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