1. Correlating Structure with Threshold Behavior of Chalcogenide Glasses Within Ge-Sn-Se Ternary System.
- Author
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Qiao, Beijing, Chen, Feifei, Huang, Yicong, Lin, Ruiqiang, Zhang, Xiaoyu, Dai, Shixun, Shen, Xiang, Nie, Qiuhua, Zhang, Xianghua, and Lucas, P.
- Subjects
CHALCOGENIDE glass ,CRYSTAL structure ,OPTICAL properties ,RAMAN spectra ,GERMANIUM ,TIN ,SELENIUM - Abstract
A systematic investigation of the optical and structural properties of chalcogenide glasses in Ge-Sn-Se ternary system is presented. We have found a threshold behavior of optical property, namely, existence of transitional composition of the Ge-Sn-Se glasses, with progressive replacement of Se by Sn. Calculation of mean coordination number indicates that the transition-like feature of optical property is associated with the evolution of chemical ordering of the Ge-Sn-Se network. Analysis of Raman spectra of the glasses explains that the interaction between Se-Se bonds, Sn(Se
1/2 )4 tetrahedra, and Sn-Sn homopolar bonds is the origination of such optical phenomenon. [ABSTRACT FROM AUTHOR]- Published
- 2017
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