Alloy target for magneto-optical recording

Details Alloy target for magneto-optical recording Alloy target for magneto-optical recording

1989-10-16

1990-08-07

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75245, 148145, 148301, 252 6255, 420416, B22F 900

Patent

active

049465015

ABSTRACT:
An alloy target for magneto-optical recording having component and composition comprising 10 to 50 atom % of at least one rare earth element from Sm, Nd, Gd, Tb, Dy, Ho, Tm and Er, the balance being substantially at least one transition metal from Co, Fe and Ni, and having a mixed structure comprising a phase of intermetallic compound of the rare earth element and the transition metal and a fine mixed phase of the rare earth element and intermetallic compound of the rare earth element and the transition metal or having a mixed structure comprising the structure above and a phase of the rare earth element alone. The target has uniform composition and high strength free from cracking, etc., shows less composition difference between film and target and less change of the film composition with elapse of sputtering time.

REFERENCES:
patent: 4620872 (1986-11-01), Hijikata et al.
patent: 4770702 (1988-09-01), Ishigaki et al.
patent: 4824481 (1989-04-01), Chatterjee et al.

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