EXAFS and XRD studies of nanocrystalline cerium oxide: the effect of preparation method on the microstructure

Savin, S.L.P. and Chadwick, A.V. and Smith, M.E. and O'Dell, L.A. (2007) EXAFS and XRD studies of nanocrystalline cerium oxide: the effect of preparation method on the microstructure. Physica Status Solidi C, 4 (3). pp. 719-722. ISSN 1610-1634. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1002/pssc.200673702

Abstract

There is considerable interest in nanocrystalline materials due to their unusual properties, such as enhanced ionic conductivity in the case of nanocrystalline ionic solids. This has potential commercial applications, particularly for oxide ion conductors. However, a detailed knowledge of the microstructure is important in fully understanding the novel properties exhibited by nanocrystalline materials. The final microstructure of a material is dependent on the preparation method used, for example, sol-gel and ball-milling methods are commonly used in the preparation of nanocrystalline oxides. Additionally, there is a problem in maintaining the materials in nanocrystalline form when they are subjected to elevated temperatures. We have been exploring strategies to restrict the growth of nanocrystalline oxides and have found that adding a small amount of an inert material, e.g. SiO2 or Al2O3, is particularly effective. We will report XRD and EXAFS studies of nanocrystalline ceria prepared by sol-gel, sol-gel pinned and ball-milling methods and the effect of preparation method on the final microstructure.

Item Type: Article
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Alan Chadwick
Date Deposited: 07 Jul 2008 13:27
Last Modified: 14 Jan 2010 14:31
Resource URI: http://kar.kent.ac.uk/id/eprint/8607 (The current URI for this page, for reference purposes)
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