The structure of glasses in the system Bi2O3-B203 is studied by X-ray diffraction and IR spectroscopy in the concentration range 30-92.3 mol% Bi2O3. It is found that, together with the appearance of BO4 groups, a part of the borate network is retained up to 66.6 mol% bismuth oxide. In the same concentration region, short and long Bi-O bonds exist but for the 3:5 and 2:1 stoichiometric compounds, only one Bi-O distance is found. Above this concentration limit, the borate network vanishes and the structure becomes selenite-like consisting of isolated BO4 groups and deformed BiO6 groups.
Origin
Unknown
Journal Title
Proc 2Nd Int Conference Borate Glasses, Crystals & Melts 1996 112-119
Sector
Special Glass
Class
S 3650