MAGNETO-OPTICAL RECORDING WITH OPTICAL AND MAGNETIC FIELD MODULATION METHODS

Abstract
The magneto-optical recording characteristics of three types of DyFeCo films were measured using three recording methods ; the optical modulation method, the magnetic field modulation method and the laser off method in which the laser power was lowered only while the magnetic field was changing. The laser off method improved the C/N in the low external magnetic field. Moreover, the erasability in the laser off method was investigated, and the value of -30dB was achieved.

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