Patent ID: 7006337

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