Basu, S and Sujatha Devi, P and Maiti, Himadri Sekhar (2004) Synthesis and properties of nanocrystalline ceria powders. Journal of Materials Research, 19 (11). pp. 3162-3171. ISSN 0884-2914

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Abstract

Nanocrystalline CeO2 powder was synthesized by a citrate-nitrate autoignition process and characterized by thermal analysis, x-ray diffraction, and impedance spectroscopy measurements. Nanocrystalline (20-40 nm) ceria powder with fluorite structure had formed in situ during the citrate-nitrate autoignition process. The powder prepared could be sintered to density more than 98% of theoretical density at 1450 degreesC. The nanocrystalline CeO2 exhibited an increase in conductivity in Ar and H-2 than air above 600 degreesC, suggesting a possible electronic contribution to the conductivity at low oxygen partial pressures. Impedance measurements on the sintered samples unequivocally established the potential of this process in developing phase pure ceria compositions

Item Type:	Article
Subjects:	General
Divisions:	UNSPECIFIED
Depositing User:	Subhra Lahiri
Date Deposited:	20 Jan 2012 10:08
Last Modified:	10 Dec 2014 05:25
URI:	http://cgcri.csircentral.net/id/eprint/453

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