Copper ion as a structural probe in PbO-CaF2-P2O5 glass system by means of spectroscopic and dielectric studies

• Published in: Journal of alloys and compounds 2009-03, Vol.472 (1-2), p.489-496
• Main Authors: PADMA RAO, M. V. N, RAVIKUMAR, V, SRINIVASA RAO, L, VENKATESWARA RAO, P, SRINIVASA REDDY, M, VEERAIAH, N
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Diffusion in solids; Exact sciences and technology; Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Permittivity (dielectric function); Physics; Self-diffusion and ionic conduction in nonmetals; Transport properties of condensed matter (nonelectronic)
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2008.05.011

PbO-CaF2-P2O5 glasses containing small concentrations of CuO from 0 to 0.6 mol% were prepared. A number of studies viz., dielectric studies (constant ', loss tan delta, ac conductivity sigmaac over a range of frequency and temperature), infrared, optical absorption ESR and photoluminescence spectra of these glasses, have been carried out. The variations observed in all these properties with the concentration of copper ions have been analyzed in the light of different oxidation states and environment of copper ions in the glass network.