Patent ID: 8760805
Filing Date: 2014-06-24
Classification: G11B,Y10T

Abstract:
1. A thin-film magnetic head comprising a slider substrate and a write element, the slider substrate having an air bearing surface at one side thereof, the write element having a recording magnetic pole film, the recording magnetic pole film being disposed on a plane crossing the air bearing surface over the slider substrate and having a large-width portion and a small-width portion continuously arranged in the named order toward the air bearing surface, the air bearing surface being parallel to an XZ plane of an XYZ orthogonal coordinate system with an X axis direction being a track width direction, wherein the small-width portion the second small-width portion has a first portion and a second portion, the first portion extends in a Z axis direction of the XYZ orthogonal coordinate system, the second portion is continuous with an upper end of the first portion and has both side faces inclined in such a direction as to increase a width of the second portion in the X axis direction toward an upper end of the second portion, the upper end of the first portion and the upper end of the second portion located in the Z axis direction opposite to a direction in which the slider substrate is located, an external angle of the first portion formed by a plane parallel to a bottom face of the first portion and a side face of the first portion is larger than an external angle of the second portion formed by a plane parallel to a bottom face of the second portion and a side face among the both side faces of the second portion, the side face of the first portion and the side face of the second portion extending in the Y axis direction, the bottom face of the first portion located in an opposite direction in which the upper end of the first portion is located, and the bottom face of the second portion located in an opposite direction in which the upper end of the second portion is located, and an end face of the first small-width portion at the air bearing surface side has a triangle shape.