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The Effect of Co Incorporation into ZnO Nanoparticles

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DOI: 10.4236/ampc.2013.31006    6,235 Downloads   11,573 Views   Citations

ABSTRACT

Co-doped ZnO nanoparticles are synthesized by co-precipitation method. The incorporation of Co ions into ZnO wur- zite structure with increasing Co concentrations was followed by X-ray diffraction. Sample structures were further studied by infrared spectra, from which a broad and strong absorption band in the range of 400 - 700 cm-1 and -OH stretching vibrational mode approximately 3400 cm-1 were observed. Ultraviolet-visible measurements showed a red shift of the absorption edge and four peaks at 468, 515, 577 and 629 nm in its reflectance spectra with increasing Co content. Magnetic measurements showed a ferromagnetic behavior for all samples. From the ESR spectra the presence of Co-metal clusters and Co-oxide precipitates are not observed and can be excluded as the origin of ferromagnetic in our samples. The ESR results are supported by UV-Vis measurements data.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

N. Djaja, D. Montja and R. Saleh, "The Effect of Co Incorporation into ZnO Nanoparticles," Advances in Materials Physics and Chemistry, Vol. 3 No. 1, 2013, pp. 33-41. doi: 10.4236/ampc.2013.31006.

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