| 摘要 |
PURPOSE:To provide a magneto-optical recording medium which has perpendicularly magnetized films of two-layered structure and is suitable for utilization in a recording method permitting overwriting by forming the above-mentioned recording medium in such a manner as to satisfy prescribed conditions. CONSTITUTION:Magnetic layers 2, 3 are laminated on a transparent substrate 1. The magnetic layer 2 has a low Curie point TL and high coercive force HH and the magnetic layer 3 has a high Curie point TH and low coercive force HL. The conditions expressed by the equation are required to be satisfied between the saturation magnetization MS2 and film thickness h2 of the magnetic layer 3 and the magnetic wall energy sigmaw between the two magnetic layers 2, 3. The magnetic layer 3 is required to satisfy TL<THCOMP when the compensation temp. of said layer is designated as THCOMP and said layer is required to satisfy (the value of the coercive force of the magnetic layer 3 at temp. TL)/(value HL of the coercive force of the magnetic layer 3 at room temp.)>0.5. The purpose is achieved by satisfying the above-mentioned conditions.
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