EPR and Optical absorption studies of PbO-CdO-TeO2-B2O3–CuO glasses

S. Vedavyas*, K. Chandra Sekhar**, G. Ramadevudu***, M. Narasimha Chary****, Md. Shareefuddin*****
* Department of Physics, University College of Science, Osmania University, Hyderabad, Telangana, India.
** Department of Physics, University College for Women, Osmania University, Hyderabad, Telangana, India.
*** Department of Physics, Vasavi College of Engineering, Hyderabad, Telangana, India.
****-***** Department of Physics, Osmania University, Hyderabad, Telangana, India.
Periodicity:October - December'2019
DOI : https://doi.org/10.26634/jms.7.3.16589


The glasses with the composition 20PbO-(10-x)CdO-10TeO2-60B2O3-xCuO (0.5≤x≤2) were prepared by melt quenching technique. X-ray diffractograms revealed the amorphous nature of the glasses. Optical absorption spectra are recorded at room temperature. Optical band gap (Eopt) and Urbach energies were determined. Electron Paramagnetic Resonance (EPR) studies were carried out by introducing Cu2+ as the spin probe. EPR spectra of all the glass samples were recorded at X-band (≈9.7 GHz) frequencies. From the EPR spectra spin-Hamiltonian parameters were evaluated. It was observed that (g≈ 2.360, g ≈ 2.080) g >g>ge (2.0023) and (A≈ 136x10-4cm-1, A≈30 x10-4cm-1) A>A. From these values it is concluded that the ground state of Cu2+ is dx2-y2 (2B1g) and the site symmetry around Cu2+ ion was tetragonally distorted in octahedral sites. It was observed that the intensity of the EPR spectra increases with increase of CuO concentration, which shows that more number of Cu2+ ions are participating in the resonance. The optical absorption spectra revealed broad absorption band, which is assigned to 2B1g2B2g transition. From the EPR and Optical data bonding coefficients were evaluated and discussed.


Metal Oxides; Borotellurite Glasses; Optical Band Gap; Spin-Hamiltonian Parameters; Bonding Parameters

How to Cite this Article?

Vedavyas, S., Sekhar, K. S., Ramadevudu. G, Chary, M. N., and Shareefuddin, M. (2019). EPR and Optical absorption studies of PbO-CdO-TeO2-B2O3–CuO glasses. i-manager’s Journal on Material Science, 7(3), 63-69. https://doi.org/10.26634/jms.7.3.16589


[1]. Ahmed, M.R., & Shareefuddin, M. (2019). EPR, optical, physical and structural studies of strontium alumino- borate glasses containing Cu2+ ions. SN Applied Sciences, 1(2019), 209. https://doi.org/10.1007/s42452-019-0201-5
[2]. Bandyopadhyay, A. K. (1981). Optical and ESR investigation of borate glasses containing single and mixed transition metal oxides. Journal of Materials Science, 16(1), 189-203. https://doi.org/10.1007/ BF00552072
[3]. Bleaney, B., Bowers, K. D., & Trenam, R. S. (1955). Paramagnetic resonance in diluted copper salts II. Salts with trigonal symmetry. Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 228(1173), 157-166. https://doi.org/10.1098/ rspa.1955.0040
[4]. Chary, M. N. (1995). Electron paramagnetic resonance studies of Cu2+ in alkali‐haloborate glasses. Physica Status Solid i (A), 148 (1), K37-K39. https://doi.org/10.1002/pssa.2211480139
[5]. Davis, E. A., & Mott, N. (1970). Conduction in noncrystalline systems V. Conductivity, optical absorption and photoconductivity in amorphous semiconductors. Philosophical Magazine, 22(179), 0903-0922. https://doi.org/10.1080/14786437008221061
[6]. Dimitrov, V., & Sakka, S. (1996). Electronic oxide polarizability and optical basicity of simple oxides. I. Journal of Applied Physics, 79(3), 1736-1740. https://doi.org/10.1063/1.360962
[7]. Durga, D. K., & Veeraiah, N. (2002). Physical properties of ZnF –As2O3 –TeO2 glasses doped with Cr ions. Physica B: Condensed Matter, 324(1-4), 127- 141. https://doi.org/10.1016/S0921-4526(02)01286-3
[8]. Gowda, V. V., Reddy, C. N., Radha, K. C., Anavekar, R. V., Etourneau, J., & Rao, K. J. (2007). Structural investigations of sodium diborate glasses containing PbO, Bi2O3 and TeO2 : Elastic property measurements and spectroscopic studies. Journal of Non-Crystalline Solids, 353(11-12), 1150-1163. https://doi.org/10.1016/j. jnoncrysol.2006.12.117
[9]. Kivelson, D., & Neiman, R. (1961). ESR studies on the bonding in copper complexes. The Journal of Chemical Physics, 35(1), 149-155. https://doi.org/10.1063/ 1.1731880
[10]. Krogh-Moe, J. (1962). Structural interpretation of melting point depression in the sodium borate system. Physics and Chemistry of Glasses, 3(4), 101-110.
[11]. Kumar, R. V., Pavani, P. G., Ramesh, B., Shareefuddin, M., & Kumar, K. S. (2013). Structural studies of xLi2O–(40 − 2 x)Bi2O3 –20CdO–40B2O3 glasses. Optical Materials, 35(12), 2267-2274. https://doi.org/10.1016/j.optmat. 2013.06.013
[12]. Kumar, V. R., Veeraiah, N., & Rao, B. A. (1997). Optical absorption and photoluminescence properties of Pr3+ -doped ZnF2 -PbO-TeO2 glasses. Journal of Luminescence, 75(1), 57-62. https://doi.org/10.1016/ S0022-2313(97)89361-1
[13]. Mansour, E. (2012). FTIR spectra of pseudo-binary sodium borate glasses containing TeO2. Journal of Molecular Structure, 1014, 1-6. https://doi.org/10.1016/ j.molstruc.2012.01.034
[14]. Phani, A. L., Sekhar, K. C., Chakradhar, R. P. S., Chary, M. N., & Shareefuddin, M. (2018). EPR and FTIR spectroscopic studies of MO-Al 2O3 -Bi2O3 -B2O3 -MnO (M= Pb, Zn and Cd) glasses. Materials Research Express, 5(3), 035204. https://doi.org/10.1088/2053-1591/aab64d
[15]. Phani, A.V.P., Hameed, A., Shareefuddin, Md., Chary, M.N., & Ramadevudu, G. (2019). EPR and Spectral Studies of Cu2+ ion in (30-x)CdO- xAl2O3 -35Bi2O3 -34B2O3 - 1CuO Glasses, i-manager's Journal on Material Science, 6(4), 67-74. https://doi.org/10.26634/jms.6.4.1 5706
[16]. Rajyasree, C., Teja, P. M. V., Murthy, K. V. R., & Rao, D. K. (2011). Optical and other spectroscopic studies of lead, zinc bismuth borate glasses doped with CuO. Physica B: Condensed Matter, 406(23), 4366-4372. https://doi.org/10.1016/j.physb.2011.08.082
[17]. Sands, R. H. (1955). Paramagnetic resonance absorption in glass. Physical Review, 99(4), 1222-1226. https://doi.org/10.1103/PhysRev.99.1222
[18]. Sekhar, K. C., Hameed, A., Chary, M. N., & Shareefuddin, M. (2016, September). Physical, Optical and Electron paramagnetic resonance studies of PbBr PbO-B2O3 glasses containing Cu2+ ions. In IOP Conference Series: Materials Science and Engineering (Vol. 149, No. 1, p. 012167). IOP Publishing. https://doi.org/10.1088/ 1757-899X/149/1/012167
[19]. Sekhar, K. C., Hameed, A., Sathe, V. G., Chary, M. N., & Shareefuddin, M. D. (2018). Physical, optical and structural studies of copper-doped lead oxychloro borate glasses. Bulletin of Materials Science, 41(3), 1-7. https://doi.org/10.1007/s12034-018-1604-4
[20]. Sekhar, K.C, Narsimlu, N., Samdani., Ramadevudu, G., Chary, N.M., & Shareefuddin, Md. (2019). Effect of lead bromide on vanadium ions in lead borate glasses for applications in modern optical devices. i-manager's Journal on Material Science, 7(1), 37-43. https://doi. org/10.26634/jms.7.1.15718
[21]. Shareefuddin, M., Jamal, M., & Chary, M. N. (1996). Electron spin resonance and optical absorption spectra of Cu2+ ions in xNaI-(30 -x) Na2O-70B2O3 glasses. Journal of Non-crystalline Solids, 201 (1-2), 95-101. https://doi.org/10.1016/0022-3093(95)00627-3
[22]. Tauc, J., Grigorovici, R., & Vancu, A. (1966). Optical properties and electronic structure of amorphous germanium. Physica Status Solidi (B), 15(2), 627-637. https://doi.org/10.1002/pssb.19660150224
[23]. Thulasiramudu, A., & Buddhudu, S. (2006). Optical characterization of Mn2+, Ni2+ and Co2+ ions doped zinc lead borate glasses. Journal of Quantitative Spectroscopy and Radiative Transfer, 102(2), 212-227. https://doi.org/10.1016/j.jqsrt.2006.02.006
[24]. Urbach, F. (1953). The long-wavelength edge of photographic sensitivity and of the electronic absorption of solids. Physical Review, 92 (5), 1324. https://doi.org/10.1103/PhysRev.92.1324

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