Abstract
A super resolution magneto - optical (MO) disk with the medium of a GdFeCo readout layer and a DyFeCo recordingla yer was in vestigated. The readout la yer wasdesig nedsoas to show in - plane magnetization at room temperature and perpendicular magnetization above lOOV for high readout resolution. Readout signal quality was measuredatseverallinearvelocities. The ve-lo city dependence was little in the range from 5 to l0m/s; the maximum car-rier to noise ratio (CNR) at each velocitiesisnearlyequal. The per-formance of high densityrecording was studied with a 680nm wavelength optical head. The CNR and thecrosstalk were 45dB and -40dB respectively at 0.55dm mark leng th and 0.8um track pitch.
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