Thin-film magnetic head element having high recording/reproducin

Details Thin-film magnetic head element having high recording/reproducin Thin-film magnetic head element having high recording/reproducin

1991-06-06

1993-03-16

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360119, G11B 523

Patent

active

051950065

ABSTRACT:
A thin-film magnetic head element comprising, on an insulative substrate, a core made by laminating a magnetic film for the lower core and a magnetic film for the upper core provided with a head gap which forms a magnetic pole generating a recording magnetic field, and a conductive film for coil crossing with the core through an insulator, being provided with a concave void which makes the shape of the magnetic pole in the vicinity of the head gap to be concave. The depth of the head gap is made shallow and the thickness of the magnetic pole outside the vicinity of the head gap satisfactorily thick. The length of the concave void in the moving direction of a recording medium is 1 to 7 .mu.m.

REFERENCES:
IEEE Transactions on Magnetics, vol. 25, No. 5, Sep. 1989, pp. 3190-3193 "A New Thin Film Head Generation IC Head" by Lazzari et al.
IEEE Transactions on Magnetics, vol. 25, No. 5, Sep. 1989, pp. 3686-3688 "A New Approach to Making Thin Film Head-Slider Devices" by Chapman.

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