Thermal characteristics, Raman spectra and structural properties of newlurite glasses within the Bi{sub 2}O{sub 3}-TiO{sub 2}-TeO{sub 2} systemp. 3

Journal Article · Sun Oct 15 04:00:00 EDT 2006 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2006.06.016· OSTI ID:20900868

Udovic, M ^[1]; Thomas, P ^[1]; Mirgorodsky, A ^[1]; Durand, O ^[1]; Soulis, M ^[1]; Masson, O ^[1]; Merle-Mejean, T ^[1]; Champarnaud-Mesjard, J C ^[1]

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1. Science des Procedes Ceramiques et de Traitements de Surface, UMR 6638 CNRS, Faculte des Sciences et Techniques, 123 Avenue Albert Thomas, 87060 Limoges Cedex (France)

Within the Bi{sub 2}O{sub 3}-XO{sub 2}-TeO{sub 2} (X=Ti, Zr) systems, a large glass-forming domain was found for X=Ti, but no glass formation was evidenced for X=Zr. Densities, glass transition (T {sub g}), crystallization (T {sub c}) temperatures and Raman spectra of the relevant glasses were studied as functions of the composition. The Raman spectra of the glasses were interpreted in terms of the structural transformations produced by the modifiers. It was established that the addition of Bi{sub 2}O{sub 3} and TiO{sub 2} content to TeO{sub 2} glass influences the T {sub g} temperature in a similar manner: this value progressively increases with the increase of the modifier concentration. However, the structural evolutions are different: (a) the addition of TiO{sub 2} to TeO{sub 2} glass keeps the polymerized framework structure in transforming a number of Te-O-Te bridges into the Te-O-Ti ones without producing any tellurite anions (i.e., the [TeO{sub 3}]{sup 2-} groups); (b) on the rary, the addition of Bi{sub 2}O{sub 3} destroys the glass framework by giving rise to the island-type [Te {sub n} O {sub m} ]{sup 2(m-2n)-} complex tellurites anions, thus causing a depolymerization of the glass. - Graphical abstract: Raman spectra of the titanium tellurite glasses and of the relevant crystalline compounds.

• OSTI ID: 20900868
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 10 Vol. 179; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALLIZATION
DEPOLYMERIZATION
GLASS
RAMAN SPECTRA
RAMAN SPECTROSCOPY
TELLURIUM OXIDES
THERMAL ANALYSIS
TITANIUM OXIDES