Publikace detail

Structure of As2S3 - Sb4S4 Glasses by Combined Raman Spectroscopy and Thermodynamic Modeling Approach

Autoři: Chromčíková Mária | Liška Marek | Holubová Jana | Černošek Zdeněk

Rok: 2013

Druh publikace: ostatní - článek ve sborníku

Název zdroje: 12th International Conference Structure of Non-Crystalline Materials: Program and Abstracts

Název nakladatele: University of Trento

Místo vydání: Trento

Strana od-do: 98-98

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
eng	Structure of As2S3 - Sb4S4 Glasses by Combined Raman Spectroscopy and Thermodynamic Modeling Approach	The structure of chalcogenide glasses of the pseudo-binary system As2S3 - Sb4S4 was investigated by comparison of the results of the thermodynamic model of Shakhmatkin and Vedishcheva with the results obtained by the analysis of Raman spectra of xAs2S3?(100 - x)Sb4S4 (x = 100, 95, 90, 80, 70, 60, 50, 40) glasses performed by the Principal Component Analysis and with the spectral decomposition by the method of Malfait. On the eigenvalues basis three independent components were identified in the studied spectral series. On the other hand, the thermodynamic modeling resulted in five components with significant abundance in the studied glasses, i.e. As, Sb, As2S2, As2S3, and Sb2S3. Finally, the correlation analysis proved the strong linear dependence between the concentrations of As, Sb, and Sb2S3. Using the method of Malfait, partial Raman spectra of As2S2, As2S3, and of the linear spectral combination (0.15 As + 0.20 Sb + Sb2S3) were calculated. The experimental spectra were reproduced with acceptable accuracy. The obtained results confirmed the structural information acquired from the thermodynamic model.	chalcogenide glasses, glass structure, Raman spectra, thermodynamics

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