Patent ID: 6791806
Filing Date: 2004-09-14
Classification: B82Y,G01R,G11B,H01F

Abstract:
A tunneling magnetoresistive stack configured to operate in a current-perpendicular-to-plane mode, the tunneling magnetoresistive stack comprising:a cap layer; a free layer position adjacent to the cap layer; a synthetic antiferromagnet comprising; a ferromagnetic reference layer having a fixed magnetic moment; a ferromagnetic pinned layer having a fixed magnetic moment; and a coupling layer positioned between the reference layer and the pinned layer; a barrier layer positioned between the free layer and the reference layer of the synthetic antiferromagnet, wherein the barrier layer is comprised of HfO; an antiferromagnet pinning layer positioned adjacent to the pinned layer of the synthetic antiferromagnet; and a seed layer positioned adjacent the pinning layer.