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Infrared spectra of WO3 – PbO – P2O5 glasses

D. A. MAGDAS1,* , O. COZAR1, I. ARDELEAN1, L. DAVID1

Affiliation

  1. Babes-Bolyai University, Faculty of Physics, 400084 Cluj-Napoca, Romania

Abstract

The structure of xWO3∙(100-x)[2P2O5∙PbO] glass system with 0≤x≤50 mol% was investigated by FTIR spectroscopy. The characteristic bands of these glasses due to the stretching and bending vibrations were identified and analyzed by the increasing of WO3 content. For this a deconvolution of each experimental spectrum was made using a Gaussian type function. Among standard deconvolution methods applied in vibrational spectroscopy of glasses, those assuming Gaussian band shapes for the IR and Raman spectra are mostly used because of the local disorder. This fact allowed us to identify the specific structural units which appear in these glasses and to carry out a quantitative analysis of the spectra. For higher concentration of tungsten oxide the W atoms prefer to bridge only with oxygen atoms which do not participate in phosphate structural groups and thus act as a network former..

Keywords

Infrared spectroscopy, Phosphate glasses, Tungsten oxide.

Submitted at: Nov. 15, 2006
Accepted at: March 15, 2007

Citation

D. A. MAGDAS, O. COZAR, I. ARDELEAN, L. DAVID, Infrared spectra of WO3 – PbO – P2O5 glasses, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 3, pp. 729-732 (2007)