Patent ID: 6301085
Filing Date: 2001-10-09
Classification: B82Y,G11B,Y10T

Abstract:
A thin film magnetic head comprising:a lower shielding layer comprising a magnetic material;a first magnetic material layer at the rear of the lower shielding layer, the first magnetic material layer being magnetically separated from the lower shielding layer by an nonmagnetic material located therebetween;a nonmagnetic MR gap layer on the lower shielding layer;a magnetoresistive element layer in the MR gap layer facing a recording medium;a lower core layer comprising a magnetic material on the MR gap layer;an upper core layer comprising a magnetic material opposed to the lower core layer with a nonmagnetic gap layer therebetween at the surface facing the recording medium; anda coil layer for inducing a recording magnetic field in the lower core layer and the upper core layer, said coil layer comprising a wound coil surrounded by insulating layers,wherein the lower core layer extends from the position facing the recording medium to the rear of the magnetoresistive element layer, bends toward the first magnetic material layer in the rear, and comes into magnetic contact with the first magnetic material layer; the coil layer lies in the rear of a step of the back end of the lower core layer and lies magnetically between the first magnetic material layer and the upper core layer; and a magnetic path induced by the coil layer passes through the first magnetic material layer, the lower core layer, and the upper core layer.