APPLICATION OF DOMAIN TRANSFER TO MAGNETOOPTICAL RECORDING - DOMAIN STABILIZATION DURING READOUT

The domain transfer phenomenon has been applied to light intensity mod ulated overwrite in order to obtain large power margin. By applying a suitable magnetic field to the multilayer er before readout, recorded domains on the memory layer are transferred onto the writing layer. Th e application of domain transfer before readout improved the read powe r margin. However, an increase in noise was observed after irradiation of high read power. The reason for the noise increase was found to be an incomplete domain transfer. The incompleteness was successfully ex plained by introducing a domain nucleation model.