TeO_x-Au薄膜の結晶化に及ぼすAuの添加効果

抄録

The effect of Au addition on crystallization was investigated for TeO_x-Au films used for optical recording materials. Crystallization phases precipitated from the films were found to be AuTe₂ in low Au content films and AuTe_1.7 in high Au content films. The crystallization rate was much faster in the case of crystalline AuTe_1.7 than in the case of crystalline AuTe₂. The time required for the signal saturation due to the crystallization of the films irradiated by laser (850nm in wavelength, 8mW/um² in power) was shortened up to 60ms for the films in which AuTe_1.7 was precipitated from 30s for the pure TeO_x films in which crystalline Te was precipitated. The transformation mechanism from the amorphous to the crystalline state in these films is discussed.