A factor which determines the network structure of diborate glasses containing divalent cations was proposed on the basis of structural studies by a combination of diffraction methods (x-ray and neutron), computer simulation and Raman spectroscopy. Structural analysis revealed that the network of BaO·2B2O3 and PbO·2B2O3 glasses consisted of a rather complex structure, whereas the networks for R = Sr, Ca, Cd, Zn was similar to diborate groups. These results suggest that the factor determining the network structure is the size of divalent cations and the critical size is located between the size of Pb and Sr. These structure models were compared with other structural studies by NMR or Raman and the agreement was found to be quite satisfactory.
|Number of pages||6|
|Journal||Physics and Chemistry of Glasses|
|Publication status||Published - Dec 1 1993|
ASJC Scopus subject areas
- Ceramics and Composites
- Physical and Theoretical Chemistry