Patent ID: 6690552
Filing Date: 2004-02-10
Classification: B82Y,G11B,H01F

Abstract:
A magnetoresistive film comprising a multilayered film including: a bias layer for generating a bias magnetic field; a pinned magnetic layer having magnetization whose direction is fixed by the bias magnetic field generated from the bias layer; a free magnetic layer having magnetization whose direction changes in accordance with an external magnetic field; and a nonmagnetic middle layer held between the pinned magnetic layer and the free magnetic layer in a thickness direction and indicating a magnitude of resistance in accordance with an angle between the magnetization direction of the pinned magnetic layer and the magnetization direction of the free magnetic layer, and being held between a pair of insulation layers in the thickness direction,wherein when a current is passed parallel to said magnetoresistive film, a current center as a position of the thickness direction for dividing the current into two so as to obtain respective equal current amounts is positioned on a side including said pinned magnetic layer during dividing of the magnetoresistive film into two in a center position of a layer thickness of said nonmagnetic middle layer in the thickness direction.