Patent ID: 6751844
Filing Date: 2004-06-22
Classification: B82Y,G11B,Y10T

Abstract:
A method of making a magnetic read head having an air bearing surface (ABS) comprising the unordered steps of:making a spin valve sensor as follows: forming a ferromagnetic free layer structure having a magnetic moment that is free to rotate from a first direction in response to signal fields from a moving magnetic medium; forming a ferromagnetic antiparallel (AP) pinned layer structure; forming an antiferromagnetic (AFM) pinning layer exchange coupled to the AP pinned layer structure for pinning a magnetic moment of the AP pinned layer structure in a second direction; and forming a nonmagnetic conductive spacer layer between the free layer structure and the AP pinned layer structure; forming the AP pinned layer structure as follows: forming first and second antiparallel (AP) pinned layers forming an antiparallel (AP) coupling layer between the first and second AP pinned layers; and at least one of the AP pinned layers with a first pinned film that is selected from the group consisting of Ni45Fe55, NiFeNb and Ni50Co50.