The role of iron ions on the structure and certain physical properties of PbO–As2O3 glasses Original Research Article

Various studies have been carried out viz optical absorption, infrared spectra, magnetic susceptibility, dielectric parameters (dielectric constant, loss and a.c. conductivity over a range of frequency and temperature; and breakdown strength) and differential thermal analysis of PbO–As2O3 glasses containing 0–1 mol% of Fe2O3. An anomaly has been observed in all the properties of these glasses when Fe2O3 concentration is about 0.25 mol%. The reasons for such anomaly have been identified and found that PbO–As2O3 glasses are more stable when Fe2O3 concentration is about 0.25 mol%.