Patent ID: 7961428
Filing Date: 2011-06-14
Classification: G11B

Abstract:
1. A thin-film magnetic head including an electromagnetic coil element, said electromagnetic coil element comprising: an upper magnetic layer and a lower magnetic layer, formed on an element formation surface of a substrate having an air bearing surface; a write gap layer, an end portion on the air bearing surface side of said write gap layer being sandwiched between said upper magnetic layer and said lower magnetic layer; a write coil layer formed to pass through at least between said upper magnetic layer and said lower magnetic layer; and at least one non-magnetic layer that is a different layer from said write gap layer and formed in said upper magnetic layer, a whole area of an upper surface, a whole area of a lower surface, a whole area of a front surface and at least a portion of a rear surface of said non-magnetic layer being covered with magnetic material of said upper magnetic layer or said lower magnetic layer.