The effects of germanium addition on properties of Ga-Sb-S chalcogenide glasses
The effects of germanium addition on properties of Ga-Sb-S chalcogenide glasses
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添加锗对Ga-Sb-S硫系玻璃性能的影响
DOI：
10.1016/j.jnoncrysol.2016.08.023
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发表时间：
2016
影响因子：
3.5
通讯作者：
Tang Dingyuan
中科院分区：
文献类型：
--
作者：
Zhang Mingjie;Yang Zhiyong;Li Lei;Wang Yuwei;Qiu Jiahua;Yang Anping;Tao Haizheng;Tang Dingyuan
实验研究了在ga8sb32s60硫系玻璃中逐渐用Ge取代Ga后玻璃的性能。还研究了玻璃结构，以阐明性能的变化。虽然用Ge取代Ga对玻璃化转变温度没有显著影响，但当一半的Ga原子被Ge原子取代时，晶化热稳定性达到最佳。当加入少量的Ge时，短波吸收边λ s（或光学带隙eg）有显著的降低，但随着Ga的进一步取代，其值没有明显的变化。随着Ga逐渐被Ge取代，长波截止边λ l、密度ρ、线性折射率n和三阶非线性折射率n2减小。结果表明，玻璃的性能变化可以用玻璃结构的演变来解释。
Properties of the glasses are experimentally investigated when Ga is gradually substituted by Ge in Ga8Sb32S60chalcogenide glass. The glass structure is also studied to elucidate the variations of the properties. While the substitution of Ga by Ge does not remarkably change the glass transition temperatureTg, the thermal stability against crystallization becomes optimum when half of the Ga atoms are replaced by Ge atoms. The short-wavelength absorption edgeλS(or optical bandgapEg) exhibits a remarkable decrease when a small amount of Ge is added, however, its value does not change significantly with further Ga substitution. As Ga is gradually replaced by Ge, the long-wavelength cut-off edgeλL, the densityρ, the linear refractive indexn, and the third-order nonlinear refractive indexn2decrease. It is shown that the property variations of the glasses could be explained by the evolution of the glass structure.