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Journal of Nanotechnology
Volume 2014, Article ID 538106, 7 pages
http://dx.doi.org/10.1155/2014/538106
Research Article

Synthesis, XRD, TEM, EPR, and Optical Absorption Spectral Studies of CuZnO2 Nanocompound

1Department of Physics, S.V.D. College, Kadapa 516 003, India
2Department of Physics, Jawaharlal Nehru Technological University College of Engineering, YSR District, Pulivendula, Andhra Pradesh 516 390, India
3Faculty of Engineering, Mie University, Tsu, Mie 514-8507, Japan

Received 5 February 2014; Revised 18 March 2014; Accepted 20 March 2014; Published 11 May 2014

Academic Editor: Bobby G. Sumpter

Copyright © 2014 T. Ravindra Reddy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Synthesis of nano CuZnO2 compound is carried out by thermal decomposition method. The crystalline phase of the material is characterized by XRD. The calculated unit cell constants are and and are of tetragonal structure. The unit cell constants are different from wurtzite (hexagonal) which indicate that a nanocompound is formed. Further TEM images reveal that the metal ion is in tetragonal structure with oxygen ligands. The prepared CuZnO2 is then characterized for crystallite size analysis by employing transmission electron microscopy (TEM). The size is found to be 100 nm. Uniform bright rings are noticed in the TEM picture suggesting that the nanocrystals have preferential instead of random orientations. The selected-area electron diffraction (SAED) pattern clearly indicates the formation of CuO-ZnO nanocompound. The nature of bonding is studied by electron paramagnetic resonance (EPR). The covalency character is about 0.74 and thus the compound is electrically less conductive. Optical absorption spectral studies suggest that Cu(II) is placed in tetragonal elongation crystal field. The spin-orbit coupling constant, , is calculated using the EPR and optical absorption spectral results suggest some covalent bond between metal and ligand. Near infrared (NIR) spectra are due to hydroxyl and water fundamentals.