Magneto-optical recording medium

A method of manufacturing a magneto-optical recording medium which incorporates a signal recording layer made of TbFeCoCr so that magneto-optical recording of said signal recording layer is performed by a magnetic-field modulation method, said method of manufacturing a magneto-optical recording medium comprising the steps of:

• forming said signal recording layer such that the total quantity of Tb and Cr contained in said signal recording layer is 24±1 at %;
• and
• then, exposing said formed signal recording layer to steam at 30×10−6 Torr·sec to 10000×10−6 Torr·sec or oxygen at 10×10−6 Torr·sec to 50×10−6 Torr·sec so that the surface of said signal recording layer is oxidized.

A method of manufacturing a magneto-optical recording medium which incorporates a signal recording layer made of TbFeCo so that magneto-optical recording of said signal recording layer is performed by a magnetic-field modulation method, said method of manufacturing a magneto-optical recording medium comprising the steps of:

• forming said signal recording layer such that the total quantity of Tb contained in said signal recording layer is 23.5±1 at %;
• and
• then, exposing said formed signal recording layer to steam at 30×10−6 Torr·sec to 10000×10−6 Torr·sec or oxygen at 10×10−6 Torr·sec to 50×10−6 Torr·sec so that the surface of said signal recording layer is oxidized.