Magnetic head and method for production thereof

Details Magnetic head and method for production thereof Magnetic head and method for production thereof

1997-12-29

1999-10-12

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360113, G11B 531, G11B 539

Patent

active

059662778

ABSTRACT:
A magnetic head comprising a lower magnetic pole formed on a wafer, a nonmagnetic write gap layer formed on the lower magnetic pole, an upper magnetic pole formed on the nonmagnetic write gap layer and provided with a pole tip possessing a thin leading end, two depressed parts formed in the lateral directions from directly below the lateral sides of the pole tip and opposed to each other across areas equal in width with the pole tip, a protective layer of a nonmagnetic insulating material adapted to fill the depressed parts and, at the same time, cover the upper magnetic pole and the lower magnetic pole, and a coil nipped between the opposed parts of a nonmagnetic insulating layer interposed between the upper magnetic pole and the lower magnetic pole.

REFERENCES:
patent: 5559653 (1996-09-01), Shouji et al.
patent: 5793578 (1998-08-01), Heim et al.

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