Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 62, Issue 6, Pages 1055-1060Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0022-3697(00)00278-X
Keywords
tellurite glasses; glass structure; exats; Raman
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Binary tellurite-based glasses in the TeO2-PbO system were prepared and its structure investigated by means of Raman Scattering and X-ray Absorption Spectroscopy. Both spectroscopies indicate strong modifications of the first coordination shell around tellurium atoms when the PbO content increases revealing for lead its glassy network modifier role. Also, Pb L-3-edge EXAFS measurements reveal this structural role played by lead atoms, but the presence of a medium range order contribution indicates that lead also participates to the glassy network formation. (C) 2001 Elsevier Science Ltd. All rights reserved.
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