Patent ID: 6891366
Filing Date: 2005-05-10
Classification: B82Y,G01R,G11B,H01F,H01L

Abstract:
1. A magneto-resistive device comprising a substrate which carries a free and a pinned ferromagnetic layer separated by a non-magnetic spacer layer therebetween for providing a magnetoresistive effect, said pinned layer comprising an artificial antiferromagnet layer system (AAF), and an exchange biasing layer, the AAF layer system including at least one CoFe layer, the exchange biasing layer being adjacent to and magnetically influencing the AAF layer system, said free layer including at least one CoFe layer, and said non-magnetic spacer layer being a Cu-type layer, wherein a side of the Cu-type layer is contiguous with a CoFe layer of the free ferromagnetic layer, and another side of the Cu-type layer is contiguous with the CoFe layer of the AAF system.