Influence of zinc on the structural and electrical properties of cerium oxide nanoparticles
| Autor: | V. S. Chaturmukha, M. P. Rajeeva, Ashok R. Lamani, H. S. Jayanna, B. M. Harish, S. Yallappa, S. Suresha |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Cerium oxide Materials science Absorption spectroscopy Scanning electron microscope Band gap Doping Analytical chemistry 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology 01 natural sciences Absorption band 0103 physical sciences 0210 nano-technology Spectroscopy |
| Zdroj: | Materials Today: Proceedings. 5:3070-3077 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2018.01.109 |
| Popis: | The Ce1-xZnxO2 (x = 0, 0.02, 0.04, 0.06, 0.08) nanoparticles (NPs) were synthesized by solution combustion method using glycine as a fuel. The obtained NPs were characterized by different physicochemical techniques such as UV-Visible spectrophotometer, X-ray diffraction (XRD), fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis. A UV-Visible absorption spectroscopy study shows the variation of optical band gap of cerium oxide (CeO2) doped with Zn. The powder XRD pattern reveals that the formation of cubic fluorite structure of CeO2, while FT-IR spectra signify the absorption band corresponding to Zn and CeO2, stretching vibrations. The surface morphology of the obtained materials was studied by SEM images and found to be highly porous in nature.EDX analysis confirms the desired stoichiometry of all the constituent elements. Furthermore, the dielectric constant (ɛ'), loss (ɛ'') and tanδ were recorded in the frequency range from 100 KHz to 2 MHz at room temperature and found to be decreased with the increase frequency. The variations of DC electrical conductivity have been studied as a function of temperature confirms the semiconducting nature of Ce1-xZnxO2NPs. |
| Databáze: | OpenAIRE |
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