The effects of Ni-Fe-O seedlayer in Co-Cr-Ta-Pt perpendicular magnetic recording media

Summary form only given. In order to attain low noise and high density recording performance, recording layer with high coercivity (H/sub c/spl perp//), high squareness ratio (S/sub /spl perp//) and high nucleation field (-H/sub n/) should be developed for perpendicular magnetic recording media. Various kinds of seed layer and interlayer, which control magnetic interactions between recording layer and soft magnetic backlayer, such as Ti, Si and C have been investigated. In this study, we propose Ni-Fe-O layer as seed layer and interlayers for Co-Cr-Ta-Pt recording layer. Ultra thin Ni-Fe-O prepared by oxidizing surface of Ni-Fe soft magnetic backlayer is suitable to reduce the spacing between surface of magnetic head and soft underlayer. The effects of Ni-Fe-O layer as seed layer of Co-Cr-Ta-Pt recording layer has been investigated.