Structural studies of glasses in the ZnO-CdO-TeO2 system doped with rare earth elements (RE=Yb or Tb) were characterised utilising several methods. X-ray diffraction patterns in these materials reveal a structure that is generally amorphous but in some glasses there is tendency to form a crystalline phase of CdTeO3. Thermal analysis showed that these glasses are stable. Infrared spectra gives a main absorption band around 800-600 cm-1 corresponding to the Te-O stretching mode in TeO4 and TeO3 groups. SEM observations of the microstructure shows abundant liquid-liquid phase separation.
|Number of pages
|Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B
|Published - Feb 2009