Patent ID: 7050361

Claim:
A magneto-optical storage medium comprising: a playback layer that displays easy in-plane magnetization characteristics at room temperature when considered as a monolayer; a non-magnetic layer positioned below said playback layer; a transfer layer positioned below said non-magnetic layer, said transfer layer having easy magnetization characteristics in the vertical direction at room temperature when considered as a monolayer; a cut-off layer positioned below said transfer layer; and a recording layer positioned below said cut-off layer, said recording layer having easy magnetization characteristics in the vertical direction at room temperature when considered as a monolayer; wherein Tc s <Tc k , where Tc s is the Curie temperature for said cut-off layer and Tc k is the Curie temperature for said recording layer, and Tc 1 >Tc s , where Tc 1 is the Curie temperature for said transfer layer, said transfer layer being made of a material comprised of GdFeCo, and wherein a Gd percentage of said GdFeCo is approximately 21–25%.