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Oxide Ion Conduction in Oxygen Rich Doped Ba2In2O5+δ Brownmillerite

Published online by Cambridge University Press:  01 February 2011

Aurélie Rolle ,
Nambi V. Giridharan ,
Pascal Roussel ,
Francis Abraham  and
Rose-Noëlle Vannier
Aurélie Rolle
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide UMR CNRS 8012 ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Nambi V. Giridharan
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide UMR CNRS 8012 ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Pascal Roussel
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide UMR CNRS 8012 ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Francis Abraham
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide UMR CNRS 8012 ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
Rose-Noëlle Vannier
Affiliation:
Laboratoire de Cristallochimie et Physicochimie du Solide UMR CNRS 8012 ENSCL, Université des Sciences et Technologies de Lille, B.P. 108, 59652 Villeneuve d'Ascq Cedex, France
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Abstract

In order to stabilize the fast oxide ion conducting properties of the high temperature form of Ba2In2O5 at lower temperature, oxygen rich doped Ba2In2O5+δ brownmillerite were prepared by partial substitution of Ba and In with higher valence cation. Vanadium, niobium, tantalum, molybdenum and tungsten were introduced on indium site and bismuth on barium site. Solid solutions were evidenced in all the cases. They were characterized by high temperature X-ray diffraction and impedance spectroscopy. A neutron diffraction study was carried out and allowed to extract preferential oxygen pathways in these materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K2.4
Copyright
Copyright © Materials Research Society 2005

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References

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