Co-Cr-M垂直異方性膜の構造と磁気特性  [in Japanese] Structure and Magnetic Properties of Co-Cr-M Films with Perpendicular Anisotropy  [in Japanese]

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 (H_<c⊥>) than Co-Cr films for a wide range of saturation magnetization values (M_s). A lower-Cr-content Co-Cr-Y film exhibited a high H_<c⊥> with a fine magnetic domain structure showing no increase in M_s 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.