Abstract
Recording experiments in which the read-out stability of thermomagnetically written domains in GdTb-Fe disks was measured as a function of read laser power and the applied magnetic field are reported. It is shown that the domain stability increases significantly and the field dependence becomes much flatter with increasing Tb content. At low Tb content, compensation temperatures below room temperature result in a strong reduction of domain stability at higher applied magnetic fields. The results of a bubblelike model using the measured magnetic and thermal properties of the disks explain and predict the recording data with high precision. >
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