Magnetic transducer head utilizing magnetoresistance effect

Details Magnetic transducer head utilizing magnetoresistance effect Magnetic transducer head utilizing magnetoresistance effect

1989-01-17

1990-01-23

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

324252, 338 32R, G11B 530

Patent

active

048962350

ABSTRACT:
A MR magnetic head with a sensing element which comprises a plurality of superposed magnetic layers which have a magnetoresistance effect in at least one and a nonmagnetic intermediate layer sandwiched between the magnetic layers, and a sensing current is fed so as to flow in the sensing element in the same direction as a signal magnetic field which is applied to the element. Each of the magnetic layers is formed so as to have an easy axis of magnetization which is substantially perpendicular to the signal magnetic field or to have an isotropic magnetic characteristic in the magnetic film plane, which eliminates Barkhausen noise.

REFERENCES:
patent: 3860965 (1975-01-01), Voegeli
patent: 3864751 (1975-02-01), Beaulieu et al.
patent: 4034414 (1977-07-01), Kaminaka et al.
patent: 4356523 (1982-10-01), Yeh
patent: 4626946 (1986-12-01), Vinal
patent: 4668913 (1987-05-01), Vinal
patent: 4673998 (1987-06-01), Souda et al.

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