Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7899716 | Journal of Non-Crystalline Solids | 2018 | 7 Pages |
Abstract
Synthesis of borate glass matrix of composition 35Li2O-10ZnO-55B2O3â¯+â¯x SnO2 wt% (xâ¯=â¯0.00, 0.50, 1.00, 1.50, 2.25 and 3.00) has been carried out by solid state reaction method. Nature amorphosity of these glasses was confirmed via X-ray diffraction (XRD) measurements. UV-visible absorption spectra within the 200-1100â¯nm wavelength range of these samples were performed. The direct/indirect optical energy gap (Egopt), Urbach energy (EU), Fermi energy (EF) were calculated. Both the optical complex dielectric constant (ε), and the optical conductivity (Ïopt) for the prepared glass samples were calculated by using the measured refractive index (n) and extinction coefficient (k). All the optical properties vary depending on the SnO2 content in borate glass samples. Refractive index (n) and the optical conductivity (Ïopt) increase with increasing SnO2 concentration. Dielectric measurements depict that both the dielectric constant (εâ²) and dielectric loss (εâ³) decrease with the increasing of frequency but a constant value was obtained beyond 10â¯kHz up to 100â¯kHz. However, ac conductivity (Ïac) increases with the increasing in frequency.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A.S. Abouhaswa, Y.S. Rammah, S.E. Ibrahim, A.A. El-Hamalawy,