Abstract
The structure and magnetic properties of Co-Cr-M (M = Nb, Y) thin films were studied. It was found that Co-Cr-M films show a higher perpendicular coercivity (Hc⊥) than Co-Cr films for a wide range of saturation magnetization values (Ms). A lower-Cr-content Co-Cr-Y film exhibited a high Hc⊥ with a fine magnetic domain structure showing no increase in Ms when the substrate temperature was increased. Co-Cr-Y films showed a fine structure of both grain observed by AFM and crystallite grain observed by TEM, and also showed a narrow distribution of the crystallite grain size.
