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EPR and Spectral Studies of Cu²⁺ ion in (30-x)CdO- xAl₂O₃- 35 Bi₂O₃ - 34 B₂O₃ -1CuO Glasses

A. V. Lalitha Phani*, Abdul Hameed**, Md. Shareefuddin ***, M. Narasimha Chary ****, G. Ramadevudu*****

* Associate Professor, Department of Physics, Sree Dattha College of Engineering, Hyderabad, Telangana, India.

** Assistant Professor, Department of Physics, Nizam College, Osmania University, Telangana, India.

*** Senior Assistant Professor, Department of Physics, Osmania University, Hyderabad, Telangana, India.

**** Professor (Rtd), Department of Physics, Osmania University, Hyderabad, Telangana, India.

***** Senior Assistant Professor, Department of Physics, Vasavi College of Engineering, Hyderabad, Telangana, India.

Periodicity:January - March'2019
DOI : https://doi.org/10.26634/jms.6.4.15706

Abstract

Electron Paramagnetic Resonance (EPR) and Optical absorption studies were investigated in CuO doped (30-x)CdO- xAl₂O₃- 35 Bi₂O₃ - 34 B₂O₃ -1CuO glasses (x=0, 5, 10, 15 mole %) were prepared by melt quenching technique. The amorphous nature of all the glass samples were confirmed by XRD technique. By using the EPR and Optical absorption measurements techniques the structural changes in the above glass system was estimated and it was confirmed that Cu²⁺ions were present in tetragonally distorted octahedral sites elongated along z-axis with d_x²-y² orbital (²B_1g) ground state in all of the glasses investigated. Bonding parameters had been evaluated by correlating EPR and optical absorption data. The molecular orbital band parameter values of (30-x)CdO- xAl₂O₃- 35 Bi₂O₃ - 34 B₂O₃ -1CuO glasses values indicated in plane σ-bonding (α²) is moderately ionic. The in plane π-bonding (β²) is ionic in nature and out of plane π-bonding (β^'2) is shifting from moderately ionic to ionic as we move from CABBC1 to CABBC3. The FTIR spectra revealed information about the nature of bonds present in the glass matrix.

Keywords

XRD, Electron Paramagnetic Resonance (EPR), Spin-Hamiltonian Parameters, Optical Bandgap, Urbach Energy, FTIR Spectra, Bismuth Borate Glasses

How to Cite this Article?

Phani, A.V.P., Hameed, A., Shareefuddin, Md., Chary, M.N., and Ramadevudu, G. (2019). EPR and Spectral Studies of Cu²⁺ ion in (30-x)CdO- xAl₂O₃- 35 Bi₂O₃- 34 B₂O₃ -1CuO Glasses i-manager’s Journal on Material Science , 6(4), 67-74. https://doi.org/10.26634/jms.6.4.15706

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EPR and Spectral Studies of Cu²⁺ ion in (30-x)CdO- xAl₂O₃- 35 Bi₂O₃ - 34 B₂O₃ -1CuO Glasses

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EPR and Spectral Studies of Cu2+ ion in (30-x)CdO- xAl2O3- 35 Bi2O3 - 34 B2O3 -1CuO Glasses

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EPR and Spectral Studies of Cu²⁺ ion in (30-x)CdO- xAl₂O₃- 35 Bi₂O₃ - 34 B₂O₃ -1CuO Glasses