| 摘要 |
PURPOSE:To suppress the decrease in the angle of Kerr rotation and to provide the magneto-optical recording medium having excellent C/N by laminating a thin film of Dy adjacently to a thin film of Co. CONSTITUTION:At least one layer of the thin film of a rare earth metal and/or the thin film of a transition metal is provided in addition to 3 layers of the thin films formed by laminating Co/Dy/Co in this order. The thin film of the transition metal is preferably Fe, Co, Ni and Tb, Gd, Nd, and Sm is preferably as the thin rore earth metal. The unit laminated film is constituted of 6 layers of the thin films formed by laminating Fe/Tb/Fe/Co/Dy/Co in this order. The improvement in coercive force and squareness ratio is enabled and the magneto- optical recording medium which is excellent in both recording and reproducing characteristics and bit stability is obtd. |
