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Title: Raman spectroscopy of glasses in the As-Te system

Abstract

For the first time, the Raman spectra of As{sub x}Te{sub 1-x} glasses, 0.2{<=}x{<=}0.6, have been measured over the entire glass-forming range. The spectra exhibit three broad spectral features attributed to vibrations of structural units having Te-Te, As-Te and As-As bonds. The observed chemical disorder in the glasses is discussed on the basis of partial bond fractions derived from the integrated intensity of the Raman modes. The underlying structural model suggests a dissociation of AsTe- or As{sub 2}Te{sub 3}-related units in the glass melt. The spectra of glasses quenched from different temperatures, as well as those of the annealed vitreous alloys, are consistent with predictions of the model. - Graphical abstract: Raman spectra of the As{sub x}Te{sub 1-x} glasses (0.2{<=}x{<=}0.4 and 0.4{<=}x{<=}0.6). Fractional concentrations of Te-Te, As-Te and As-As bonds in the As{sub x}Te{sub 1-x} glasses calculated using experimental Raman data. The solid lines represent predictions of the dissociation model assuming that the main chemically ordered structural units are related to AsTe. Highlights: Black-Right-Pointing-Pointer For the first time, the Raman spectra of As{sub x}Te{sub 1-x} glasses, 0.2{<=}x{<=}0.6, were measured. Black-Right-Pointing-Pointer The partial bond fractions were derived from the integrated intensity of the Raman modes. Black-Right-Pointing-Pointer An empirical quantitative approach to themore » Raman data was proposed for the reaction modeling.« less

Authors:
 [1];  [1];  [2]
  1. Department of Chemistry, Saint-Petersburg State University, 198504 St. Petersburg (Russian Federation)
  2. Universite du Littoral Cote d'Opale, 59140 Dunkerque (France)
Publication Date:
OSTI Identifier:
22012158
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: . 190; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ALLOYS; ARSENIC TELLURIDES; CERAMIC MELTERS; DISSOCIATION; FORECASTING; GLASS; RAMAN SPECTRA; RAMAN SPECTROSCOPY; SIMULATION; SOLIDS; STRUCTURAL MODELS

Citation Formats

Tverjanovich, A., E-mail: andr.tver@yahoo.com, Rodionov, K., and Bychkov, E. Raman spectroscopy of glasses in the As-Te system. United States: N. p., 2012. Web. doi:10.1016/J.JSSC.2012.02.044.
Tverjanovich, A., E-mail: andr.tver@yahoo.com, Rodionov, K., & Bychkov, E. Raman spectroscopy of glasses in the As-Te system. United States. doi:10.1016/J.JSSC.2012.02.044.
Tverjanovich, A., E-mail: andr.tver@yahoo.com, Rodionov, K., and Bychkov, E. Fri . "Raman spectroscopy of glasses in the As-Te system". United States. doi:10.1016/J.JSSC.2012.02.044.
@article{osti_22012158,
title = {Raman spectroscopy of glasses in the As-Te system},
author = {Tverjanovich, A., E-mail: andr.tver@yahoo.com and Rodionov, K. and Bychkov, E.},
abstractNote = {For the first time, the Raman spectra of As{sub x}Te{sub 1-x} glasses, 0.2{<=}x{<=}0.6, have been measured over the entire glass-forming range. The spectra exhibit three broad spectral features attributed to vibrations of structural units having Te-Te, As-Te and As-As bonds. The observed chemical disorder in the glasses is discussed on the basis of partial bond fractions derived from the integrated intensity of the Raman modes. The underlying structural model suggests a dissociation of AsTe- or As{sub 2}Te{sub 3}-related units in the glass melt. The spectra of glasses quenched from different temperatures, as well as those of the annealed vitreous alloys, are consistent with predictions of the model. - Graphical abstract: Raman spectra of the As{sub x}Te{sub 1-x} glasses (0.2{<=}x{<=}0.4 and 0.4{<=}x{<=}0.6). Fractional concentrations of Te-Te, As-Te and As-As bonds in the As{sub x}Te{sub 1-x} glasses calculated using experimental Raman data. The solid lines represent predictions of the dissociation model assuming that the main chemically ordered structural units are related to AsTe. Highlights: Black-Right-Pointing-Pointer For the first time, the Raman spectra of As{sub x}Te{sub 1-x} glasses, 0.2{<=}x{<=}0.6, were measured. Black-Right-Pointing-Pointer The partial bond fractions were derived from the integrated intensity of the Raman modes. Black-Right-Pointing-Pointer An empirical quantitative approach to the Raman data was proposed for the reaction modeling.},
doi = {10.1016/J.JSSC.2012.02.044},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = . 190,
place = {United States},
year = {2012},
month = {6}
}