Patent ID: 6597547
Filing Date: 2003-07-22
Classification: B82Y,G11B,H01F,H01L

Abstract:
A magnetoresistance effect device, comprising a multilayer film, the multilayer film comprising a layered antiferromagnetic film structure, an indirect exchange coupling film, a first non-magnetic film and a first ferromagnetic film, which are provided in this order on a non-magnetic substrate directly or via an underlying layer, wherein:the layered antiferromagnetic film structure comprises a first antiferromagnetic film and an &agr;-Fe2O3 film; the indirect exchange coupling film comprises a second non-magnetic film and a pair of second ferromagnetic films interposing the second non-magnetic film therebetween; and respective thicknesses of the pair of second ferromagnetic films differ from each other by at least about 0.5 nm.