Perpendicular magnetic medium and manufacturing method for the m

Details Perpendicular magnetic medium and manufacturing method for the m Perpendicular magnetic medium and manufacturing method for the m

1994-10-04

1997-03-18

Kiliman, Leszek

Stock material or miscellaneous articles

Composite

Of inorganic material

428694SC, 428694LE, 428900, 369 13, 2041922, G11B 566, C23C 1400

Patent

active

056121458

ABSTRACT:
The present invention discloses a perpendicular magnetic recording medium which includes a non-magnetic base and a magnetic thin film made of a Nd--Fe--B alloy on the non-magnetic base. The Nd--Fe--B alloy has a composition of Nd: 2 to no more than 13 atom %, B: up to 4 atom % and Fe: the remainder. The Nd--Fe--B alloy having the above composition may additionally have at least one element among Co, Ga, Si and V as additives. The magnetic thin film is formed on the non-magnetic base by sputtering method, wherein a sputtering gas pressure is determined to be within a range 20.about.40 mTorr, and a sputtering temperature of said non-magnetic base is determined to be less than 100.degree. C.

REFERENCES:
patent: 4992095 (1991-02-01), Nate et al.

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