Patent ID: 6770387
Filing Date: 2004-08-03
Classification: G11B,Y10T

Abstract:
A magneto-optical recording medium comprising:a recording layer made of TbFeCo which has a direction of easy magnetization extending in a direction perpendicular to the recording layer and shows a transition metal-rich magnetization; an intermediate layer stacked on the recording layer and made of GdFeCo, GdFeCoSi or GdFe which has a direction of easy magnetization extending in an in-plane direction at room temperature and shows a rare earth element-rich magnetization; a reproduction layer stacked on the intermediate layer and made of GdFeCo or GdDyFeCo which has a direction of easy magnetization extending in a direction perpendicular to the reproduction layer and shows a transition metal-rich magnetization; and a mask layer made of GdFeCo which is formed on the reproduction layer, has a direction of easy magnetization extending in an in-plane direction at room temperature, shows a rare earth element-rich magnetization, and exhibits a Curie temperature higher than that of the recording, intermediate and reproduction layers.