Abstract
The recording and reproducing processes in magneto-optical disk were simulated by means of a new calculation model to study the dependence of the magnetic field modulation recording property on magnetic properties of the recording medium. It was confirmed that the dependence of the carrier on the intensity of the recording magnetic field is much affected by the demagnetizing field during the recording process due to the magnetization around the spot irradiated with a laser beam and that a lower magnetic field is enough in the medium which has a composition close to the compensation composition than in the medium with TM-rich composition. It was in good agreement with experimental results.
