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Dislocation Associated Incubational Domain Formation in Lightly Gadolinium-Doped Ceria

Published online by Cambridge University Press:  19 November 2010

Zhi-Peng Li ,
Toshiyuki Mori ,
Fei Ye ,
Ding Rong Ou ,
Jin Zou  and
John Drennan
Zhi-Peng Li*
Affiliation:
Fuel Cell Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Toshiyuki Mori
Affiliation:
Fuel Cell Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Fei Ye
Affiliation:
Key Laboratory of Materials Modification, School of Materials Science and Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P.R. China
Ding Rong Ou
Affiliation:
Laboratory of Fuel Cells, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P.R. China
Jin Zou
Affiliation:
School of Engineering, The University of Queensland, St. Lucia, Brisbane, Queensland 4072, Australia Center for Microscopy and Microanalysis, The University of Queensland, St. Lucia, Brisbane, Queensland 4072, Australia
John Drennan
Affiliation:
Center for Microscopy and Microanalysis, The University of Queensland, St. Lucia, Brisbane, Queensland 4072, Australia
*
Corresponding author. E-mail: LI.Zhipeng@nims.go.jp
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Abstract

Nanosized incubational domain was observed in 10 at.% gadolinium-doped ceria (GDC) using high-resolution transmission electron microscopy. Dislocations were extensively observed in 10 at.% GDC instead of heavily doped 25 at.% GDC. By Fast Fourier Transform and Inverse Fast Fourier Transform analysis, it was noticed that the incubational domain existing in 10 at.% GDC has different lattice spacing and orientation from the neighboring ceria matrix. Furthermore, dislocations were usually observed in the interface region between the incubational domain and the ceria matrix. Based on experimental results, the formation mechanism of dislocation associated incubational domain in lightly gadolinium-doped ceria is rationalized.

Keywords

dislocationdomaingadolinium-doped ceriamicrostructuresolid oxide fuel cellTEM
Type
TEM and STEM Materials Applications
Information
Microscopy and Microanalysis , Volume 17 , Issue 1 , February 2011 , pp. 49 - 53
Copyright
Copyright © Microscopy Society of America 2011

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