Magnetic head and method for production thereof
AssigneeFujitsu Limited
InventorsTakao Koshikawa, Atsuhiko Nagai
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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.
Claims5
A magnetic head comprising:
- a lower magnetic pole formed on a wafer;
- a nonmagnetic write gap layer formed on said lower magnetic pole;
- an upper magnetic pole formed on said 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 said pole tip and opposed to each other across areas equal in width with said pole tip;
- a protective layer of a nonmagnetic insulating material adapted to fill said depressed parts and, at the same time, cover said upper magnetic pole and said lower magnetic pole;
- and
- a coil nipped between the opposed parts of a nonmagnetic insulating layer interposed between said upper magnetic pole and said lower magnetic pole.
Dependencies are inferred from the claim text.