Patent ID: 6074743
Filing Date: 2000-06-13
Classification: B82Y,G11B,H01F,H01L,Y10S,Y10T

Abstract:
A magnetoresistance device comprising a magnetoresistance effect element, conductive films and electrode portions, wherein said conductive films are conductively connected to said magnetoresistance effect element through said electrode portions, and said magnetoresistance effect element comprises a non-magnetic metal layer, a ferromagnetic layer formed on one surface of the non-magnetic metal layer, a soft magnetic layer formed on the other surface of said non-magnetic metal layer, and a pinning layer which is formed on said ferromagnetic layer to pin a direction of magnetization of said ferromagnetic layer, and wherein said ferromagnetic layer and said pinning layer are coupled to each other by epitaxial growth,wherein said ferromagnetic layer has a composition represented by (Co.sub.z N.sub.1-z).sub.w Fe.sub.1-w (0.4.ltoreq.z.ltoreq.1.0, 0.5.ltoreq.w.ltoreq.1.0 by weight), and the soft magnetic layer has a composition represented by (Ni.sub.x Fe.sub.1-x).sub.y Co.sub.1-y (0.7.ltoreq.x.ltoreq.0.9, 0.5.ltoreq.y.ltoreq.1.0 by weight).