Patent ID: 6999286

Claim:
A magnetic nano-oxide based current-perpendicular-to-plane (CPP) magnetoresistive (MR) sensor stack having a spin valve configuration and having increased perpendicular resistance and enhanced magnetoresistive properties, comprising: a substrate; a first metallic, non-magnetic spacer layer formed upon said substrate; a first ferromagnetic layer formed on said first metallic non-magnetic spacer layer; a first magnetic nano-oxide formed upon said first ferromagnetic layer; a second metallic, non-magnetic spacer layer formed on said first magnetic nano-oxide layer; a second magnetic nano-oxide layer formed upon said second metallic, non-magnetic spacer layer; a second ferromagnetic layer formed upon said second magnetic nano-oxide layer; an antiferromagnetic layer formed upon said second ferromagnetic layer and exchange biasing it; a third metallic, non-magnetic spacer layer formed on said antiferromagnetic layer.