MAGNETO-OPTICAL RECORDING DEVICE

PURPOSE:To obtain a magneto-optical recording medium having high storage stability and recording density by depositing two kinds of super thin films to constitute a first magnetic layer, and forming a second magnetic layer of rare earth-transition metal amorphous alloy thin film in a manner that the most upper super thin film in the first magnetic layer adjacent to the second magnetic layer is the second type super thin film so as to increase the apparent coercive force of the first magnetic layer. CONSTITUTION:The first magnetic layer consists of alternately deposited super thin films. These super thin films are the first type super thin film comprising platinum group elements and the second type super thin film comprising Co. The second magnetic layer is deposited thereon to couple with the first magnetic layer by exchange force to form the magneto-optical recording medium. These layers are formed in a manner that the Cu super thin film is contacting to the second magnetic layer. The second magnetic layer consists of an amorphous thin film of rare earth-transition metal alloy. The exchange force sigmaW between the first and second magnetic layers increases the apparent coercive force Hc* of the first magnetic layer since the exchange force sigmaW increases by direct contact of the second type super thin film and the second magnetic layer. By this method, the minimum unit of data for read-out can be minimized, and thus, the recording density can be increased.