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Influence of valence states and co-ordination of cobalt ions on dielectric properties of PbO-Bi2O3-As2O3:CoO glass system |
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| Authors: | N Srinivasa RaoL Srinivasa Rao Ch Srinivasa RaoBV Raghavaiah V Ravi KumarMG Brik N Veeraiah |
| Institution: | a Department of Physics, Acharya Nagarjuna University, Nuzvid Campus, Nuzvid 521201, A.P., India b Department of Physics, SRR Engineering College (JNTUH), Karepalli, Khammam 507122, A.P., India c Department of Physics, Andhra Loyola College, Vijayawada 520008, A.P., India d Department of Physics, University College of Engineering and Technology, Acharya Nagarjuna University, Nagarjuna Nagar 522510, A.P., India e Institute of Physics, University of Tartu, Riia 142, Tartu 51014, Estonia |
| Abstract: | The glasses of the composition (40−x) PbO-15Bi2O3-45As2O3-xCoO, with 0≤x≤0.6 mol% in the steps of 0.1 were synthesized. The dielectric properties viz., dielectric constant, loss and ac conductivity over moderately larger ranges of frequency and temperature were investigated. The results were analyzed with the aid of the data on optical absorption and IR spectra. The analysis indicated that there is an increase in the insulating strength of the glasses with increase in the concentration of CoO up to 0.4 mol%. |
| Keywords: | PbO-Bi2O3-As2O3 glasses Cobalt ions Dielectric properties |
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