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What X-Ray Absorption Spectroscopy can actually say about the short range order in glasses.

F Rocca;
2008
2008
Istituto di fotonica e nanotecnologie - IFN
The 6th International Conference on Borate glasses, crystals and melts
No
Himeji (Japan)
Abstract: Independence of aggregation state, site sensitivity and inherently local nature make X-ray Absorption Spectroscopy (XAS) a very useful tool for exploiting the local order in multi-component glasses. X-ray absorption near edge structure (XANES), probing unoccupied electronic states, valence and charge transfer, is important to elucidate chemical bonding; extended x-ray fine structure spectroscopy (EXAFS), providing data about coordination number, first neighbours distances and local disorder allows a quantitative analysis about short range structure. This talk points out advantages and limits of XAS by showing several studies carried out on borate glasses looking both at the local environment of glass former and modifier. A particular emphasis will be given to AgI-based borate glasses where a correlation between the short range structural parameters of ad and I and dc-ionic conductivity has been found out.
1
none
F. Rocca;G. Dalba
273
info:eu-repo/semantics/conferenceObject
04 Contributo in convegno::04.01 Contributo in Atti di convegno
04.01 Contributo in Atti di convegno
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/431249
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