Patent ID: 8920947
Filing Date: 2014-12-30
Classification: G01R,G11B,G11C,H01L,Y10T

Abstract:
1. A microwave assisted magnetic recording (MAMR) structure, comprising: (a) a composite seed layer formed on a substrate and having a Ta/M1/M2 configuration where M1 is a metal or alloy having a fcc(111) or (hcp) hexagonal closed packed (001) crystal orientation, and M2 is a metal unequal to M1, said composite seed layer forms an interface with an overlying spin injection layer; (b) the spin injection layer (SIL) comprised of a laminated structure with perpendicular magnetic anisotropy (PMA) represented by (CoFe/Ni) (c) an oxygen surfactant layer consisting of oxygen formed at the interface between the composite seed layer and SIL, and/or at one or more interfaces in the SIL.