Patent ID: 8547666
Filing Date: 2013-10-01
Classification: B82Y,G11B

Abstract:
1. A current perpendicular to plane magnetoresistive head characterized in that: the head has a structure formed by an antiferromagnetic layer, and by laminating a first pinned layer, an antiparallel coupling layer, a second pinned layer, a nonmagnetic intermediate layer, and a free layer in sequence, and wherein no additional pinned layer is formed beyond the free layer in sequence; sensing current flows from the free layer toward the first pinned layer; and the relative angle of magnetization between the second pinned layer and the free layer is in the range of 70 to 80 degrees in the state where a magnetic field to be sensed is not applied, and wherein spin torque noise is suppressed based on the relative angle and the direction of the sensing current.