Multilayered magnetic films and thin-film magnetic heads using t

Details Multilayered magnetic films and thin-film magnetic heads using t Multilayered magnetic films and thin-film magnetic heads using t

1988-02-01

1989-03-21

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

G11B 5127

Patent

active

048149217

ABSTRACT:
Multilayered magnetic films of the invention comprising at least two unit magnetic films each of which has a thickness of from 0.05 to 0.9 .mu.m and includes a plurality of ferromagnetic layers each having a thickness of from 0.01 to 0.2 .mu.m and a 1 nm to 10 nm thick first intermediate layer consisting of a ferromagnetic, nonmagnetic or antiferromagnetic material and provided between adjacent ferromagnetic layers, and a second intermediate layer having a thickness of from 10 to 40 nm, consisting of a nonmagnetic or antiferromagnetic material and provided between the at least two unit magnetic films. The multilayered magnetic film is suitable as a pole of a thin-film magnetic head. An underlayer may be further provided between the magnetic film and a substrate whereby a multilayered magnetic film having good characteristics can be obtained.

REFERENCES:
patent: 4404609 (1983-09-01), Jones
patent: 4593334 (1986-06-01), Anderson et al.

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