Abstract
Thermomagnetic recording process for various TbFeCo films on PMMA has been simulated in the case of the irradiation of the laser spot with 1.0 and 0.2 μm by using a modified Huth’s equation. In the case of TM-rich alloy, it is found that the domains smaller than 0.1 μm in diameter are formed at temperature below the Curie point because of the large demagnetizing energy, which results from the large magnetization. On the other hand, the large temperature gradient makes it difficult to stabilize the small size domain in RE-rich film.
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