Structural studies of ionically conductive glasses by EXAFS

Author:

ROCCA F.

Abstract

A good knowledge of the local structure is necessary for a better understanding of the high conductivity shown by some ions in oxide glasses. The ability of X-Ray Absorption Spectroscopy (XAS) to select a single atomic species makes this technique very useful in this field : XANES and EXAFS can give information not only on radial distribution function of atoms around the absorbing species but also on their geometrical arrangement. The experience of the last years shows that peculiar information can be extracted by studying multiple-scattering contributions and evaluating the influence of static and thermal disorder. The results of XAS studies on AgI-containing silver borate glasses are presented and discussed, with particular emphasis on the role of temperature dependent measurements in EXAFS. The comparison with results concerning other similar systems offers the possibility of discussing strengths and limits of XAS.

Publisher

EDP Sciences

Subject

General Physics and Astronomy

Cited by 10 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. XAFS studies of glass structure;Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B;2020-12-12

2. Effect of the Ba/K ratio on structural, dielectric and energy storage properties of BaO–K2O–TiO2–P2O5 glass-ceramics;Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B;2020-12-12

3. Theoretical Description of Ion Conduction in Disordered Systems: From Linear to Nonlinear Response;Zeitschrift für Physikalische Chemie;2010-11-01

4. Ionic Conductivity and Relaxation Dynamics in Fast Ion Conducting Silver Borate Glasses;Defect and Diffusion Forum;2004-09

5. Ordered and disordered models of local structure around Ag cations in silver borate glasses based on x-ray absorption near-edge structure spectroscopy;Physical Review B;2004-04-02

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