THERMODYNAMIC MODEL AND STRUCTURE OF As2S3-As2Se3 GLASSES BASED ON THE MCR ANALYSIS OF RAMAN SPECTRA

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F14%3A39898512" target="_blank" >RIV/00216275:25310/14:39898512 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
THERMODYNAMIC MODEL AND STRUCTURE OF As2S3-As2Se3 GLASSES BASED ON THE MCR ANALYSIS OF RAMAN SPECTRA
Original language description
Raman spectra and structure of six glasses with the composition of xAs(2)S(3)center dot(1 - x)As2Se3 (x = 1; 0.75; 0.667; 0.50; 0.25; 0) were studied. In our previous work the Raman spectral data were interpreted on the basis of the Shakhmatkin and Vedishcheva thermodynamic model, where the glass was treated as an ideal solution of five components, namely: As2S3, As2Se3, As2S2, AsSe, and Se. The lack of mixed S-Se compounds in the model does not allow the interpretation of the measured spectra taking into account the existence of mixed trigonal pyramids of the Ogle As2S3-xSex. In the present work an alternative simple thermodynamic model was proposed based on two equilibrium reactions leading to formation of two types of mixed As2S3-xSex (x = 1, 2) pyramids. The results of multivariate curve resolution (MCR) analysis of the measured spectra were interpreted as proportional to the molar fractions of four system components: As2S3, As2Se3, As2SSe2, and As2S2Se. Using the nonlinear regress
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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