Glass-forming ability and structure of glasses in the ZnO-WO.sub.3./sub.-P.sub.2./sub.O.sub.5./sub. system

0380606 - FZÚ 2013 RIV GB eng J - Journal Article
Koudelka, L. - Šubčík, J. - Mošner, P. - Gregora, Ivan - Montagne, L. - Delevoye, L.
Glass-forming ability and structure of glasses in the ZnO-WO₃-P₂O₅ system.
European Journal of Glass Science and Techology. Part B. Physics and Chemistry of Glasses. Roč. 53, č. 3 (2012), s. 79-85. ISSN 1753-3562
R&D Projects: GA AV ČR KAN301370701
Institutional research plan: CEZ:AV0Z10100520
Keywords : glasses * ternary systems * Raman spectra * NMR
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.764, year: 2012

The glass-forming region of the ZnO–WO3-P2O5 system has been determined and basic physical properties of the glasses were obtained. Structure and properties of these glasses were studied by Raman and 31P NMR spectroscopies. 31P MAS NMR spectra of the glasses show that the phosphate chains are shortened by the incorporation of tungstate structural units. The co-existence of WO4 and WO6 units in the glass structure was seen in glasses with a high ZnO content. Raman spectra reveal existence of isolated WO6 units especially in the glasses with a low WO3 content and a high P2O5 content. Clustering of WO6 units by the formation W–O–W bonds takes place in glasses with high WO3 content.
Permanent Link: http://hdl.handle.net/11104/0211268