Abstract: Abstract The extended X-ray absorption fine structure (EXAFS) of a series of lithium germanate glasses were obtained using synchroton radiation. Structural parameters were extracted from the data using an iterative fitting algorithm designed to minimize the ‘sum of squares’ difference between the experimental data and an ab initio theoretical calculation of the unapproximated (‘curved wave’) EXAFS expression. We identify two distinct co-ordination sites in the glasses with germanium-oxygen bond lengths which correspond closely to the bo...
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Topics: 
Crystallography