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X-ray diffraction and absorption studies of ion exchanged glasses

✍ Scribed by M. Dubiel; R. Schmitz; U. Kolb; D. Gutwerk; H. Bertagnolli

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 136 KB
Volume: 208-209
Category: Article
ISSN: 0921-4526
DOI: 10.1016/0921-4526(94)00694-q

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✦ Synopsis

X-ray diffraction and absorption experiments were performed to determine the structure of commercial sodium silicate glasses before and after a silver-sodium ion exchange. EXAFS measurements at the Na and Ag K-edge display the transition of the sodium environment consisting of five oxygens analogously to that of disilicate glasses to the twofold coordination of silver similar to crystalline Ag20. The existence of Ag-Ag correlations could be deduced from both the curve-fitting analyses of Ag K-edge oscillations and the differential distribution function of diffraction data. The influence of silver incorporation on the silicate network structure has been shown.

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