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Room temperature synthesis and spectral characterization of Cu2+-doped CdO powder

Author(s)
Reddy, Ch. VenkataShim, J.Byon, C.Rao, L. V. KrishnaSatish, D. V.Ravikumar, R. V. S. S. N.
Issued Date
2016-03
DOI
10.1007/s12648-015-0753-1
URI
https://scholarworks.unist.ac.kr/handle/201301/21457
Fulltext
https://link.springer.com/article/10.1007%2Fs12648-015-0753-1
Citation
INDIAN JOURNAL OF PHYSICS, v.90, no.3, pp.359 - 364
Abstract
In the present study, we have synthesized undoped and Cu2+-doped CdO nanopowders by a mild solution method at room temperature. Powder X-ray diffraction, optical absorption, electron paramagnetic resonance and Fourier transform infrared measurements are used to characterize prepared powders. The powder X-ray diffraction patterns reflect the cubic crystal structure for undoped and Cu2+-doped CdO powders. Surface morphology images and compositional features are studied by scanning electron microscopy and energy-dispersive X-ray techniques, respectively. The optical absorption spectra exhibit a single absorption band for Cu2+-doped sample, which is the characteristic absorption band of distorted octahedral site symmetry. By correlating the electron paramagnetic resonance and optical results for Cu2+-doped CdO nanopowder, bonding parameters are evaluated. These values indicate the partial covalency of in-plane sigma (alpha(2)) and inplane pi bonding (beta(2)(1)) between copper ions and their ligands. The FT-IR spectra indicate the fundamental vibrations of Cd-O.
Publisher
INDIAN ASSOC CULTIVATION SCIENCE
ISSN
0973-1458
Keyword (Author)
Optical materialsElectron paramagnetic resonanceX-ray diffractionCrystal structure
Keyword
ELECTRON-PARAMAGNETIC-RESONANCEOPTICAL-ABSORPTIONTRANSITION-METALTHIN-FILMSGLASSESZNONANOPOWDERIONSEPRESR

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