Magneto-optical recording medium having two reproduction layers and a method for reproducing thereof

A method for reproducing information stored in an magneto-optical recording medium, comprising the steps of:

• configuring a magneto-optical recording medium including a recording layer having a recording magnetic domain where information is recorded in a perpendicular magnetization direction;
• and a reproductive layer where its magnetization is reversed by a stray magnetic field generated from the recording magnetic domain, wherein said reproductive layer includes a first reproductive layer where a stable magnetic domain width is larger than the recording magnetic domain width at room temperature and is smaller than the recording magnetic domain width at a higher temperature than a first critical temperature, said stable magnetic domain width is a minimum width in which the magnetic domain stably exists;
• and a second reproductive layer where a stable magnetic domain width is smaller than the recording magnetic domain width at room temperature and is larger than the recording magnetic domain width at a higher temperature than a second critical temperature that is set higher than the first critical temperature;
• and
• raising the temperature of the reproductive layer so that it becomes higher than the second critical temperature by irradiating a light beam onto the reproductive layer, while obtaining a reproductive signal by preventing the temperature of the recording layer from becoming higher than a Curie temperature.