Patent ID: 6466403
Filing Date: 2002-10-15
Classification: G11B

Abstract:
A thin film magnetic head comprising: an upper core layer and a lower core layer that extend from a back region toward a magnetic pole tip region, end surfaces thereof being exposed on a medium opposing surface, and the upper core layer and the lower core layer being magnetically connected in the back region; and a gap layer provided between the upper core layer and the lower core layer in the magnetic pole tip region,wherein an insulation layer is deposited on the lower core layer; a groove extending from the medium opposing surface toward the back region is provided in the magnetic pole tip region of the insulation layer; the groove is composed of a groove main body that opens to the lower core layer, the upper core layer, and the medium opposing surface, and a slant portion formed in the opening of the groove main body that is adjacent to the upper core layer; a lower magnetic pole layer, the gap layer, and an .upper magnetic pole layer are deposited in the groove; and the lower magnetic pole layer is joined to the lower core layer, while the upper magnetic pole layer is joined to the upper core layer, the upper magnetic pole layer forming an upper magnetic pole tip, while the lower magnetic pole layer forming a lower magnetic pole tip.