Patent ID: 6490126
Filing Date: 2002-12-03
Classification: G11B

Abstract:
A thin-film magnetic head comprising:a first magnetic layer and a second magnetic layer magnetically coupled to each other and including magnetic pole portions opposed to each other and placed in regions of the magnetic layers on a side of a medium facing surface of the head that faces toward a recording medium, each of the magnetic layers including at least one layer; a gap layer provided between the pole portions of the first and second magnetic layers; and a thin-film coil at least part of which is placed between the first and second magnetic layers, the at least part of the coil being insulated from the first and second magnetic layers; wherein: each of the first and second magnetic layers includes: a yoke portion connected to one of the pole portions and located in a region including a region that faces the coil; the yoke portion of at least one of the magnetic layers includes: a plurality of magnetic material layers; and a resistance layer located between adjacent two of the magnetic material layers and having an electric resistance greater than an electric resistance of the magnetic material layers; and the resistance layer is divided and located in a plurality of regions that are separated from each other so as to be arranged in a direction parallel to the medium facing surface.