Thin film magnetic head having a magnetized ferromagnetic film o

Details Thin film magnetic head having a magnetized ferromagnetic film o Thin film magnetic head having a magnetized ferromagnetic film o

1984-02-06

1987-01-27

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

338 32R, 324252, G11B 5127, G01R 3302

Patent

active

046398066

ABSTRACT:
A thin film magnetic head for detecting, as a change in electric resistance, a change in signal magnetic field to be applied along the magnetization-hard-axis direction of a metal ferromagnetic thin film (MR element) having unit-axis anisotropy, which comprises a ferromagnetic film, which is sufficiently larger in coercive force than the metal ferromagnetic thin film, the ferromagnetic film being disposed on a superposed portion between a lead conductor portion and the metal ferromagnetic thin film (MR element), the metal ferromagnetic thin film (MR element) being coupled in ferromagnetic exchange (MR element) to the ferromagnetic film which is larger in coercive force. The ferromagnetic film is magnetized in a direction longitudinally of the MR element.

REFERENCES:
patent: 4354212 (1982-10-01), Nouchi et al.

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