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Correlating Structure with Threshold Behavior of Chalcogenide Glasses Within Ge-Sn-Se Ternary System

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.
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Submitted on : Tuesday, May 23, 2017 - 10:31:48 AM
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Beijing Qiao, Feifei Chen, Yicong Huang, Ruiqiang Lin, Xiaoyu Zhang, et al.. Correlating Structure with Threshold Behavior of Chalcogenide Glasses Within Ge-Sn-Se Ternary System. Journal of the American Ceramic Society, Wiley, 2017, 100 (1), pp.108-114. ⟨10.1111/jace.14477⟩. ⟨hal-01500401⟩

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