Bedekar, Vinila V and Patra, Saheli and Dutta, Atanu and Basu, Rajendra Nath and Tyagi, A K (2010) Ionic conductivity studies on neodymium doped ceria in different atmospheres. International Journal of Nanotechnology, 7 (9-12, ). pp. 1178-1187. ISSN 1475-7435

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Abstract

Nano-crystalline 10 and 20 mol% neodymium (Nd) doped ceria powders were prepared by gel-combustion synthesis. The single-phase nature of the nano powder has been confirmed by X-ray diffraction. These sinter-active nano powders resulted in dense products, as the sintered densities were found to be similar to 90% of theoretical densities. Ionic conductivity studies were carried out in air, hydrogen and oxygen atmospheres. The samples showed ionic conductivity of 1.3 x 10(-2) cm(-1) at 650 degrees C, and the activation energy values obtained in this system were in the range of 0.7-1.0 eV. These studies also revealed that no electronic conduction was observed, as the ionic conductivity values were almost similar in different environments.

Item Type:	Article
Uncontrolled Keywords:	CeO(2); powders-chemical preparation; sintering; ionic conductivity; grain boundaries
Subjects:	Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	01 Feb 2012 11:41
Last Modified:	06 Jun 2012 12:01
URI:	http://cgcri.csircentral.net/id/eprint/588

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