1. The effects of germanium addition on properties of Ga-Sb-S chalcogenide glasses.
- Author
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Zhang, Mingjie, Yang, Zhiyong, Li, Lei, Wang, Yuwei, Qiu, Jiahua, Yang, Anping, Tao, Haizheng, and Tang, Dingyuan
- Subjects
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GERMANIUM , *ADDITION reactions , *GALLIUM compounds , *CHALCOGENIDE glass , *SUBSTITUTION reactions , *GLASS transition temperature - Abstract
Properties of the glasses are experimentally investigated when Ga is gradually substituted by Ge in Ga 8 Sb 32 S 60 chalcogenide 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 temperature T g , the thermal stability against crystallization becomes optimum when half of the Ga atoms are replaced by Ge atoms. The short-wavelength absorption edge λ S (or optical bandgap E g ) 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 edge λ L , the density ρ , the linear refractive index n , and the third-order nonlinear refractive index n 2 decrease. It is shown that the property variations of the glasses could be explained by the evolution of the glass structure. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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