Structural analysis of molten Bi4Ge3O12(2Bi2O33GO2), Bi2GeO5(Bi2O3GeO2) and Bi12GeO20(6Bi2O3GeO2) has been carried out using the high-temperature energy dispersive X-ray diffraction (EDXD) method. The local ordering unit structure of Ge04 tetrahedra is recognized in the bismuth germanate (BGO) melts of the three compositions. On the other hand, distorted octahedral unit structure of BiO6 is suggested in the Bi2Ge05 melt. Specific heats of these three BGO compounds have also been estimated from the differential scanning calorimetry (DSC) measurements, but no particular temperature dependence is detected after melting.
- Energy dispersive X-ray analysis
- Molten state
- Structural analysis
ASJC Scopus subject areas
- Physics and Astronomy(all)