Magnetic properties of CoCr Based Perpendicular Thin Film Magnetic Recording Media with Ti Underlayer

摘要

By performing structural analysis in perpendicular magnetic recording media, it is clarified that the magnetic layer is composed of a column structure which has c--plane orientation and an initial layer which has spherical random c--axis orientat ion. Furthermore, by taking account of perpendicular an isotropy energy constant Ku' measured by perpendicular torque method, we propose a quantitative analysis method to distinguish the magnetocrystalline anisotropy K~grain_u of column structure from the perpendicular magnetic anisotropy of magnetic layer.