Thin film magnetic head having improved coil conductor layer

Details Thin film magnetic head having improved coil conductor layer Thin film magnetic head having improved coil conductor layer

1991-10-23

1994-11-29

Westin, Edward P.

Dynamic magnetic information storage or retrieval

Head

Core

360123, G11B 5147

Patent

active

053695399

ABSTRACT:
A thin film magnetic head in which at least a magnetic layer, a conductor layer constituting a coil and an insulating layer (or layers) are formed and patterned to a predetermined shape on a substrate, wherein the conductor layer is formed of a Cu--Ag alloy of Cu.sub.100-x Ag.sub.x where 0.1.ltoreq.x.ltoreq.10 in atomic percent. The gap surface has a surface irregularity level not exceeding 350 Angstroms at Rmax and the conductor layer has a resistivity of 2 .mu..OMEGA. cm or less even after heat treatment at 450.degree. to 550.degree. C.

REFERENCES:
patent: 4622613 (1986-11-01), Nomura et al.
patent: 4774755 (1988-10-01), Yoshisato et al.
patent: 4860140 (1989-08-01), Momata et al.
patent: 5004520 (1991-04-01), Tsuji et al.
patent: 5059278 (1991-10-01), Cohen et al.

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