Patent ID: 6430115
Filing Date: 2002-08-06
Classification: G11B

Abstract:
A magneto-optical recording medium, comprising three layers formed in the following sequence:a reproducing layer which has perpendicular magnetization from room temperature to a Curie temperature, in a single reproducing layer, a first in-plane magnetic layer which has in-plane magnetization from room temperature to a Curie temperature of the first in-plane magnetic layer, and a recording layer which has perpendicular magnetization from room temperature to a Curie temperature of the recording layer, wherein Tc21 and Tc23 are satisfied, where Tc1 represents the Curie temperature of said reproducing layer, Tc2 represents the Curie temperature of said in-plane magnetic layer, and Tc3 represents the Curie temperature of said recording layer; and said reproducing layer includes an area which has a temperature of less than Tc2 and has in-plane magnetization due to an exchange coupling with said in-plane magnetic layer, and an area which has a temperature of more than Tc2 and has single-domain perpendicular magnetization due to expansion and transfer of magnetization information from said recording layer to said reproducing layer.