| 摘要 |
PURPOSE:To lower a Curie temp. without impairing a Kerr rotating angle and to improve recording efficiency and reproducing efficiency by consisting the magneto-optical recording medium of a quaternary alloy of amorphous Td-Dy- Fe-Co having an axis of easy magnetization in the direction perpendicular to the film plane. CONSTITUTION:The magneto-optical recording medium consists of the quaternary alloy of the amorphous Td-Dy-Fe-Co having the axis of easy magnetization in the direction perpendicular to the film plane and has the magnetic alloy film satisfying the following general formula (Tb1-zDy)1-y(Fe1-xCox)y, 0<x<=0.3, 0.2<=y<=0.8, 0.3<=z<=1. The sufficient magnetic anisotropy and the sufficient Kerr rotating angle are provided on the magneto-optical recording medium by adopting the compsn. regulated by the above-mentioned general formula. In addition, reading out at a good S/N is possible. |
