Patent ID: 6624986
Filing Date: 2003-09-23
Classification: B82Y,G11B

Abstract:
A magnetic read head which has an air bearing surface (ABS), comprising:a spin valve sensor including: a ferromagnetic first pinned layer structure that has a magnetic moment; a first pinning layer exchange coupled to the first pinned layer structure for pinning the magnetic moment of the first pinned layer structure; a free layer structure; a nonmagnetic electrically conductive first spacer layer located between the free layer structure and the first pinned layer structure; and the free layer structure including: a ferromagnetic layer; and a first ferromagnetic oxide layer interfacing the first spacer layer; nonmagnetic electrically nonconductive first and second read gap layers; the spin valve sensor being located between the first and second read gap layers; ferromagnetic first and second shield layers; and the first and second read gap layers being located between the first and second shield layers.