Patent ID: 6519211
Filing Date: 2003-02-11
Classification: G11B

Abstract:
A magneto-optical recording medium, comprising:a substrate; and a reproducing layer and a recording layer provided on the substrate, wherein: a recording magnetic domain is provided in the recording layer by heating the recording layer by irradiation with light and applying a recording magnetic field to the recording layer so that information is recorded in the recording layer; the recording layer is a magnetic film having magnetic anisotropy in a direction perpendicular to the film surface, and the magnetic film holds the recording magnetic domain formed therein; the magneto-optical recording medium further comprises an intermediate layer and a reproducing aid layer between the reproducing layer and the recording layer; wherein: saturated magnetization of the reproducing aid layer increases with an increase in the temperature of the reproducing aid layer; in a temperature range where reproduction is performed by irradiation of reproducing light, the recording magnetic domain of the recording layer is transcribed onto the reproducing layer via the reproducing aid layer, and the information recorded in the recording layer is reproduced; and the reproducing layer is a vertical magnetic film having a magnetic characteristic such that outside the reproducing temperature range, the recording magnetic domain in the reproducing layer transcribed from the recording layer shrinks and disappears due to a shrink force of the reproducing layer.