Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1484113 | Journal of Non-Crystalline Solids | 2005 | 5 Pages |
Abstract
Glasses in PbGeO3–PbF2–CdF2 and GeO2–PbO–PbF2–CdF2 systems were studied and the fluorine losses during synthesis were investigated. Samples were characterized by differential scanning calorimetry (DSC), X-ray diffraction, Fourier transform infrared spectroscopy (FTIR) and Raman scattering spectroscopy. The use of stoichiometric germanate glass, PbGeO3, instead of introducing individual oxides (GeO2 + PbO) lead to decreasing fluorine losses, as detected by a fluorine ion selective electrode. The main structural features obtained from vibrational spectroscopy could be described by a metagermanate basic structure permeating fluorine rich regions.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
L.A. Bueno, Y. Messaddeq, F.A. Dias Filho, S.J.L. Ribeiro,