Patent ID: 8576514
Filing Date: 2013-11-05
Classification: G11B,Y10T

Abstract:
1. A thin-film magnetic head comprising: a main magnetic pole layer having a magnetic pole end face on a side of a medium-opposing surface opposing a recording medium; a write shield layer having a write shield end face disposed in the medium-opposing surface; a gap layer formed between the main magnetic pole layer and write shield layer; a shield magnetic layer connected to the main magnetic pole layer; and a thin-film coil wound around any of the main magnetic pole layer, the write shield layer or the shield magnetic layer, wherein the main magnetic pole layer, the write shield layer, the gap layer and the thin-film coil are laminated on a substrate, and the shield magnetic layer includes a leading shield part arranged on a substrate side of the main magnetic pole layer and arranged on the medium-opposing surface side of the thin-film coil, and the leading shield part has a variable distance structure in which a rearmost part most distanced from the medium-opposing surface on the main magnetic pole layer side is distanced more from the main magnetic pole layer than is a foremost part closest to the medium-opposing surface on the main magnetic pole layer side, an upper tilted surface formed in a descending slope like shape closer to the substrate as the upper tilted surface is distanced more from the medium-opposing surface, and a flat surface, the flat surface being distanced more from the medium-opposing surface than the upper tilted surface.