| 摘要 |
A magneto-optical recording medium capable of overwriting by light modulation comprises a substrate, a first magnetic layer having a curie point T1 and a coercive force H1, a second magnetic layer having a curie point T2 and a coercive force H2, and a third magnetic layer having a curie point T3 and a coercive force H3. The first, second and third magnetic layers are successively laminated on the substrate. The first magnetic layer, the second magnetic layer and the third magnetic layer each are vertically magnetized film composed chiefly of an amorphous alloy of rare earth elements and transition metal elements, and satisfy the following conditions: H1>H2>H3, T1>T2 and T3. By constituting the magneto-optical recording medium as above, the external magnetic field can be reduced to thereby prevent the disappearance of the recording bit and to enable the compactness of a recording apparatus to be accomplished.
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