| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1626310 | Journal of Alloys and Compounds | 2007 | 11 Pages |
Abstract
Dielectric constant (ɛ′), loss (tan δ), ac conductivity (σ) of CaO–Sb2O3–B2O3:M2O3 (Al2O3, Ga2O3 and In2O3) glasses with varying concentrations of M2O3 (0–5 mol%), were measured as a function of frequency and temperature over moderately wide ranges. The analysis of results of these studies along with IR, Raman and optical absorption spectra and also DTA studies indicated that in the concentration ranges, 0 ≤ Al2O3 ≤ 4, 0 ≤ Ga2O3 ≤ 2 and 1 ≤ In2O3 ≤ 5, Al3+, Ga3+ ions occupy tetrahedral positions whereas In3+ ions take up octahedral substitutional positions, cross-link with the other structural units in the glass network and increase the rigidity of the glass network.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
M. Srinivasa Reddy, G. Naga Raju, G. Nagarjuna, N. Veeraiah,