| 摘要 |
A magneto-optical recording apparatus records information on a magneto-optical recording medium composed of a memory layer and a recording layer which are disposed on a substrate, each comprising a magnetic thin film of amorphous-rare-earth transition-metal alloy. The memory and recording layers are magnetically coupled directly, or through an intermediate layer therebetween, to each other under an exchange force. A recording magnetic field generator such as a permanent magnet or an electromagnet applies a recording magnetic field to the magneto-optical recording medium, and an initializing magnetic field generator such as a permanent magnet or an electromagnet applies an initializing magnetic force to the magneto-optical recording medium. The initializing magnetic field generator has a magnetic pole confronting a surface of the magneto-optical recording medium. The initializing magnetic force comprises a magnetic field HV directed perpendicularly to the surface of the magneto-optical recording medium, and a magnetic field HH directed along the surface of the magneto-optical recording medium. The magnetic fields HV, HH are defined as follows: HV</=HC2+HW2, and HH>{(HC2+HW2)-HV}x1.7 where HC2 is the coercive force of the recording layer and HW2 is the exchange force.
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