| 摘要 |
A magneto-optical recording medium where a magneto-optical recording film is formed on optical phase pits formed on a substrate can be optically regenerated both the optical phase pit signals and the signals of the recording film formed thereon. The magneto-optical recording medium satisfies following condition, <?in-line-formulae description="In-line Formulae" end="lead"?>344X-8.12>=Y and Y>=286X-0.7<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>0.080<=X<=0.124 AND 16<=Y<=30 <?in-line-formulae description="In-line Formulae" end="tail"?> where X (lambda) is the optical depth of the phase pits formed on the substrate and Y (%) is the modulation degree of the phase pits when irradiated with an optical beam in the polarization direction perpendicular to the tracks of the optical recording medium. According to the above condition, a magneto-optical recording medium, which can suppress the jitter of MO signal and phase pit signal within less than ten percents without generating cracks with a sufficient repeat recording durability, is obtained.
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