TITLE:
Synthesis and Characterization of Cadmium Containing Sodium Borate Glasses
AUTHORS:
Vandana Sharma, Supreet Pal Singh, Gurmel Singh Mudahar, Kulwant Singh Thind
KEYWORDS:
Sodium Borate Glasses; Optical Band Gap; Molar Volume; UV-VIS and FTIR Spectroscopy and Bandgap Energy
JOURNAL NAME:
New Journal of Glass and Ceramics,
Vol.2 No.4,
October
30,
2012
ABSTRACT: Glass system (80% B2O3 – (20 – y)% Na2CO3 – y% CdO, where y = 3, 6, 9, 12 and 15 mol%) prepared by meltquenching technique and checked by XRD technique reveals the amorphous nature of these glasses. Increases in density from 2.18 to 2.82 (g/cm3) were observed with an increase in CdO content. Ultraviolet-Visible (UV-VIS) absorption spectra of polished parallel surfaces glass samples showed a decrease in the optical band gap from 3.72 to 3.59 eV with increasing CdO content. The results suggest that CdO content in glass samples plays a role as a network modifier. In addition, a correlation between the results from density, UV-VIS and FTIR measurements indicates that change in the atomic structure is due to the formation of BO4 units.