Patent ID: 9034662
Filing Date: 2015-05-19
Classification: B82Y,G11B,H01F,H01L,Y10T

Abstract:
1. A process to manufacture a magnetic read head, comprising: providing a seed layer and depositing thereon an antiferromagnetic (AFM) layer; depositing an AP2 pinned layer on said AFM layer; depositing an AFM coupling layer on said AP2 pinned layer; forming a ferromagnetic AP1 layer on said AFM coupling layer; depositing a spacer layer; forming a free layer on said spacer layer; and depositing a capping layer on the free layer wherein at least one of the ferromagnetic AP1 layer and the free layer further comprise a magneto-resistance enhancing layer (MREL) comprising an n-type semiconductor (S) layer selected from a group consisting of semiconductors and semimetals, and two conductive layers M1, M2 to give a FM1/M1/S/M2/FM2/spacer/free layer, AP1/spacer/FL1/M1/S/M2/FL2, or FM1/M1/S/M2/FM2/spacer/FL1/M1/S/M2/FL2 configuration where FM1 and FM2 are first and second portions of the AP1 layer that contact bottom and top surfaces, respectively, of a first MREL, and FL1 and FL2 are first and second portions of the free layer that contact bottom and top surfaces, respectively, of a second MREL, and wherein M1 and M2 are selected from a group consisting of Cu, Ag, Au, C (including graphene and nano-tubes), Zn, Ti, Sn, Cr, Al, Mg, and Ru.