| 摘要 |
<p>A magneto-optical disk which has superposed on a transparent substrate three films, i.e. a film of magneto-optical recording medium, an interference film formed on one side of the film, and a protective film formed on the other side of tne film, is enabled to acquire notably high magneto-optical recording and reproducing properties and long durability by forming the interference film with a composition of AOx, LiAOy, or BizDOu (wherein A stands for at least one member selected from the group consisting of Ta and Nb, D for at least one member selected from the group consisting of Ge, Si, Ti, Pb, Zn, Al, and B, and x, y, z, and u stand for numerical values respectively satisfying the formulas 1.5 « x < 2.5, 1.5 « y < 3, 11 « z « 13, and 16 « u « 23).</p> |
