MAGNETO-OPTICAL RECORDING MEDIUM

摘要

PURPOSE:To easily control recording sensitivity without changing a Curie temp. and compensation temp. by controlling the temp. change of the coercive force of a magneto-optical recording film which records information. CONSTITUTION:The temp. change of the coercive force of the magneto-optical recording film is controlled by adding a platinum group element to the recording medium. Namely, the temp. at which the coercive force decreases to the magnetic field at the time of recording or erasing (externally impressed magnetic field + diamagnetic field) or below can be changed in the process of decreasing the coercive force with an increase in temp. when the platinum group element is added to the magnetic recording medium and the amt. of said element to be added is controlled. Recording and erasing are executed and the recording sensitivity of information is controlled even if the temp. of the recording film does not attain the Curie temp. in this way.