Numéro
J. Phys. Colloques
Volume 42, Numéro C4, Octobre 1981
Proceedings of the Ninth International Conference on Amorphous and Liquid Semiconductors
Page(s) C4-225 - C4-228
DOI https://doi.org/10.1051/jphyscol:1981447
Proceedings of the Ninth International Conference on Amorphous and Liquid Semiconductors

J. Phys. Colloques 42 (1981) C4-225-C4-228

DOI: 10.1051/jphyscol:1981447

SODIUM ENVIRONMENTS IN GLASS

G.N. Greaves

Science and Engineering Research Council, Daresbury Laboratory, Daresbury, Warrington WA4 4AD, England


Abstract
Sodium environments have been measured directly in several oxide glasses using EXAFS at the sodium K edge. The existence of local structure around sodium in glass contradicts the conventional Zachariasen model. Analysis of the EXAFS indicates there are significant differences relating to the glass modifier : glass former chemistry - the details of which demonstrate similarities with crystalline silicates and borates.