Double layered Co-Cr-Pt-Nb film with high Pt content was investigated for obtaining a large perpendicular magnetic anisotropy. This film suppresses the reduction in H_c⊥ at high temperature atmosphere. A Pt(Pd)(stacked)intermediate layer enlarged perpendicular coedrcivity and squareness. It was found that an initial growing layer of the storage layer was reduced by the Pt/Ti stacked intermediate layer. Auger electron spectroscopy revealed that there was almost no oxygen at the initial stage of the storage layer growth. The Pt(Pd)layer can control the grain size of the storage layer to be small and uniform and improve magnetic characteristics of top layer.
