Patent ID: 6545955
Filing Date: 2003-04-08
Classification: G11B

Abstract:
A magneto-optical storage medium, comprising:a reproduction layer exhibiting in-plane magnetization at room temperature and exhibiting perpendicular magnetization above a first transition temperature; an in-plane magnetized layer including an in-plane magnetized film having a Curie temperature approximately equal to the first transition temperature; a storage layer including a perpendicularly magnetized film for storing information; and at least one supplementary reproduction section, interposed between the storage layer and the in-plane magnetized layer, including a first supplementary reproduction layer and a first in-plane magnetized supplementary reproduction layer, the first supplementary reproduction layer exhibiting in-plane magnetization at room temperature and exhibiting perpendicular magnetization above a second transition temperature, the first in-plane magnetized supplementary reproduction layer being disposed adjacent the first supplementary reproduction layer and including an in-plane magnetized film having a Curie temperature approximately equal to the second transition temperature, wherein the first transition temperature is relatively lower than the second transition temperature.