Kinetics of light-assisted physical ageing in S-rich arsenic sulphide glasses

Bulletin of Materials Science

关键词: Chalcogenide glass;    ageing;    calorimetry;    relaxation.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The obtained results show that kinetics of light-assisted physical ageing in S-rich glasses can be well fitted with stretch-exponential Kohlrausch-type function, in which exponent $\beta$-values and the effective time relaxationconstant τ depend on the wavelength of incident photons. The obtained $\beta$-values exhibit well-expressedminimum for the structural relaxation stimulated by light with energy of quanta comparable with the optical gap of the material. This effect is found to be similar to Se-rich glasses.

【 授权许可】

CC BY