Combination type thin film magnetic head and method of manufactu

Details Combination type thin film magnetic head and method of manufactu Combination type thin film magnetic head and method of manufactu

1999-02-25

2000-11-28

Klimowicz, William

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

G11B 539

Patent

active

061543470

ABSTRACT:
A combination type thin film magnetic head including a magnetoresistive type reading thin film magnetic head and an inductive type writing thin film magnetic head is formed by forming a first magnetic layer 33 having a thickness of about 70-150 nm on a whole surface of an insulating substrate 31, 32, forming a second magnetic layer 34 having a thickness of about 2-3 .mu.m on the first magnetic layer at a restricted area at which a MR element will be formed later, forming a first insulating layer 35 having a thickness smaller than the second magnetic layer on the first magnetic layer, forming a shield gap layer on the first and second magnetic layers such that a magnetoresistive layer 37 is embedded within a portion of the shield gap layer formed on the second magnetic layer, forming a third magnetic layer on the shield gap layer, forming a thin film coil 43, 45 on a portion of the third magnetic layer situating above the first insulating layer, forming a write gap layer 46 on the third magnetic layer and thin film coil, and forming a fourth magnetic layer 47 on the write gap layer. The combination type thin film magnetic head can solve the problem of the thermal asperity, while the insulating property of shield gap layer and the magnetic shielding property can be improved.

REFERENCES:
patent: 5435053 (1995-07-01), Krunbi et al.
patent: 5438747 (1995-08-01), Krounbi et al.
patent: 5452164 (1995-09-01), Cole et al.
patent: 5606478 (1997-02-01), Chen et al.
patent: 5617277 (1997-04-01), Chen et al.
patent: 5668689 (1997-09-01), Schultz et al.
patent: 6034848 (2000-03-01), Garfunkel et al.

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