Abstract: A magnetooptical storage element comprising a recording layer of a multi-layered structure including a reflecting film, said reflecting film being made of metals or metalloids having a low thermal conductivity coefficient.

Abstract: In production of an optomagnetic recording medium having a porous anode oxidized coat on a base plate, a thin film of magnetic material of high saturated magnetization is developed after grinding and etching following formation of the anode oxidized coat in order to increase the effective reflection plane, thereby greatly raising accuracy of detection of the polarization angle at reading-out of signals.

Abstract: A double-layered magnetooptical recording medium consists of two exchange-coupled layers that permit perpendicular magnetization, one layer having a low Curie point and a high coercive force and the other layer having a high Curie point and a low coercive force. The layer having low coercive force is made of a transition metal rich amporphous Gd.sub.U (Fe.sub.V Co.sub.100-V).sub.100-U alloy having the following compositional range, and the layer having high coercive force is made of a transition metal rich amorphous Tb.sub.W Fe.sub.100-W alloy having the following compositional range:U=20-26 atomic %,V=50-80 atomic %, andW=27-33 atomic %.