Patent ID: 6661624
Filing Date: 2003-12-09
Classification: B82Y,G11B

Abstract:
A spin-valve magnetoresistive device comprising:a free magnetic layer as a first ferromagnetic layer; a non-magnetic conductive layer; a laminated fixed magnetic layer that includes a second ferromagnetic layer, a reverse parallel coupling intermediate layer, and a third ferromagnetic layer, which are laminated in that order; an anti-ferromagnetic layer; and a fourth ferromagnetic layer that cancels a leakage magnetic field, said fourth ferromagnetic layer setting a direction of magnetization of said free magnetic layer in a direction perpendicular to a magnetization direction of said laminated fixed magnetic layer in the absence of an external magnetic field, wherein the free magnetic layer, the non-magnetic conductive layer, the laminated fixed magnetic layer, the anti-ferromagnetic layer, and the fourth ferromagnetic layer, are laminated in that order or the reverse order.