Patent ID: 6549383
Filing Date: 2003-04-15
Classification: B82Y,G11B

Abstract:
A magnetic read head comprising:a spin valve sensor including: a ferromagnetic free layer that has a magnetic moment; a ferromagnetic first pinned layer that has a magnetic moment; a nonmagnetic conductive spacer layer located between the free layer and the first pinned layer; and an antiferromagnetic metallic first pinning layer exchange coupled to the first pinned layer for pinning the magnetic moment of the first pinned layer; and the first pinned layer including: first and second films composed of cobalt iron (CoFe); and a middle film composed of cobalt iron niobium hafnium (Co85 Fe2Nb10Hf2-5) and located between the first and second films; first and second hard bias and lead layers connected to the spin valve sensor; nonmagnetic nonconductive first and second read gap layers; the spin valve sensor and the first and second hard bias and lead layers 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.