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Vibrational spectroscopic study on iron doped silicabismuthate glasses and glass ceramics

M. TODEA1,* , S. SIMON1

Affiliation

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

Abstract

Fourier transform infrared (FTIR) and Raman spectroscopic data obtained for iron doped silica-bismuthate glasses were used to investigate the changes induced in the local structure of samples as the ratio between Bi2O3 and SiO2 content changes from 9 to 0.66. The environment of constituent cations was investigated both in vitreous and partially crystallised samples of same composition. Progressive substitution of Bi2O3 by SiO2 contributes to the structural relaxation of vitreous network and enhances glass stability. By crystallisation heat treatment the structural units appear to be more uniform as it results from the narrowing of corresponding IR and Raman bands. FTIR data show that more affected by composition and heat treatment is the environment of bismuth than that of silicon. Developing of polycrystalline phases in vitreous matrices was investigated also by X-ray diffraction..

Keywords

Heavy metal glasses, Glass-ceramics, Raman, FTIR.

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

Citation

M. TODEA, S. SIMON, Vibrational spectroscopic study on iron doped silicabismuthate glasses and glass ceramics, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 3, pp. 621-624 (2007)