Abstract
Doping Se into the fast-growth eutectic Sb70Te30 recording film can improve the archival stability and the recording sensitivity, but the initialization process will become more difficult. When the concentration of Se was increased, the nucleation rate of the Se-doped Sb70Te30 recording films will increase. To achieve smooth switch between the amorphous and crystalline states and simultaneously obtain the maximum optical contrast, the optimum doping concentration of Se into Sb70Te30 recording film should be slightly less than 2.1 at. %.
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