Thin-film laminated magnetic heads of Fe-Si-Al alloy

Details Thin-film laminated magnetic heads of Fe-Si-Al alloy Thin-film laminated magnetic heads of Fe-Si-Al alloy

1986-10-03

1990-01-16

Tupper, R. S.

Dynamic magnetic information storage or retrieval

Head

Core

29603, G11B 5147

Patent

active

048947423

ABSTRACT:
A magnetic film of Fe-Si-Al alloy comprises a substrate and an Fe-Si-Al alloy film in which argon is entrapped. A thin-film laminated magnetic head comprises a pair of opposed substrates, and alternately laminated Fe-Si-Al alloy films entrapping argon therein and non-magnetic insulating films between the substrates. In the magnetic film and the head the substrates have a thermal expansion coefficient lower than that of the Fe-Si-Al alloy films and the amount of argon entrapped in the alloy films is controlled within the range of about 0.01 to about 0.3 wt. % so that internal stresses in the alloy films are substantially zeroed.

REFERENCES:
patent: 4324531 (1982-04-01), Meckel et al.
patent: 4525262 (1985-06-01), Class et al.
patent: 4559572 (1985-12-01), Kumasaka et al.
patent: 4631613 (1986-12-01), French
patent: 4670972 (1987-06-01), Sakakima
patent: 4705613 (1987-11-01), French
Homma et al, "Planar Deposition of Aluminum by RF/DC Sputtering with RF Bias", J. Electrochem. Soc., pp. 1466-1472 (Jun. 1985).

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