Spectroscopic Properties Of Lead Borate Glasses Doped With Copper Ions

Research Article
Naga Lakshmi K., Sesha Reddy V., Prasad M and Sambasiva Rao K
DOI: 
http://dx.doi.org/10.24327/ijrsr.2018.0904.1994
Subject: 
science
KeyWords: 
PbO-B2O3: CuO, Copper ions, Optical Absorption, IR Spectra, ESR Spectra.
Abstract: 

40PbO-(60-x)B2O3: (x)CuO glasses with the values of x ranging from 0.1-0.4 mol % in steps of 0.1 were prepared. A number of Spectroscopic studies viz. x- ray diffraction, optical absorption, IR Spectra and ESR Spectra were carried out. The Optical absorption spectra suggests that Cu2+ ions occupy octahedral positions in larger concentrations in the titled glass network. The EPR spectra of the glasses suggests that With successive replacement of B2O3 with CuO, the values of g tensors are observed to decrease. The IR spectral studies point out an increase in the degree of disorder of the glass network. As the concentration of CuO is increased in the glass matrix, the intensity of the vibrational band due to BO3 groups is observed to increase while the band due to BO4 structural units is observed to decrease. Overall the analysis of the results of various spectroscopic studies of CuO doped PbO-B2O3 glasses, there is a gradual increase in the degree of depolymerization of the glass network.