Microwave induced combustion Synthesis of Nano- Codoped Ceria and their electrical properties

Abstract

In this work, Ce0.75Gd0.1Ca0.15O1.8 nanopowders are successfully synthesized by a Glycine-nitrate combustion<br />process under the microwave irradiation. Then calcination was carried out at 700 °C. Calcined powders<br />identified by room temperature X-ray diffraction were single phase and had a crystallite size between 16 to 24<br />nm (based on Schererr formula). Scanning electron microscopy (SEM) was employed to characterize the<br />morphology of powder. We also studied the effect of fuel to nitrate ratio on the amount of released energy<br />and on the crystallite size and compositional homogeneity of the resulting powders. Finally electrical<br />properties of obtained powder were studied.