Local structure and oxidation state of multivalent elements in oxide glasses
Paul A. Bingham
The local structural environment and oxidation state of multivalent elements in oxide glass can strongly affect their physical properties and hence it is important to gain a detailed understanding of the factors governing their behaviour. Here, focus will be placed upon the behaviour of Fe and Se in different oxide glass matrices including alkali borosilicate and soda-lime-silica. Results from a combination of Fe and Se K-edge XANES and EXAFS and 57Fe Mössbauer spectroscopy will be presented and interpreted and the extracted information on oxidation state, coordination and local environment as functions of glass composition and preparation conditions will be discussed.