| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1481106 | Journal of Non-Crystalline Solids | 2013 | 6 Pages |
•These glasses have high thermal stability to a large extent.•These are colored glasses and used in making special optical glasses.•These glasses are more useful for practical applications than pure PbO–P2O5 glasses.
PbO–La2O3–P2O5 glasses containing different concentrations of Cr2O3 ranging from 0 to 0.5 mol% were prepared. A number of studies viz., differential thermal analysis, infrared, optical absorption, ESR spectra and magnetic properties of these glasses have been carried out as a function of chromium ion concentration. The analysis of the results of these studies indicated that chromium ions mostly exist in Cr3 + state in these glasses when the concentration of Cr2O3 ≤ 0.3 mol% occupy octahedral positions and above this concentration chromium ions seem to subsist in Cr6 + state and occupy tetrahedral positions with CrO2 −4 structural units.
