Abstract
The oxygen environment of metal atoms, Me, in binary phosphate glasses is studied by X-ray diffraction. Structure factors belonging to two samples with slightly different Me content are combined so that information about the Me environment is separated. The samples under investigation are calcium and sodium phosphate glasses in the vicinity of the metaphosphate composition. In the glasses only the ratio of metal oxide to phosphorus pentoxide can be modified. The influence of a changed oxygen content is considered. Results about the first oxygen sphere surrounding the Me atoms are presented. Because of the changed oxygen content, it is not practicable to discuss the information about larger distances on the basis of the difference technique presented.
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