Microstructural and chemical characterization of ordered structure in yttrium doped ceria

Yan, Pengfei, Mori, Toshiyuki, Wu, Yuanyuan, Li, Zhimin, Auchterlonie, Graeme John, Zou, Jin and Drennan, John (2013) Microstructural and chemical characterization of ordered structure in yttrium doped ceria. Microscopy and Microanalysis, 19 1: 102-110. doi:10.1017/S1431927612013888

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Author Yan, Pengfei
Mori, Toshiyuki
Wu, Yuanyuan
Li, Zhimin
Auchterlonie, Graeme John
Zou, Jin
Drennan, John
Title Microstructural and chemical characterization of ordered structure in yttrium doped ceria
Journal name Microscopy and Microanalysis   Check publisher's open access policy
ISSN 1431-9276
1435-8115
Publication date 2013-02
Year available 2013
Sub-type Article (original research)
DOI 10.1017/S1431927612013888
Open Access Status
Volume 19
Issue 1
Start page 102
End page 110
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher Cambridge University Press
Collection year 2014
Language eng
Formatted abstract
Abstract The ordered structures in different doping levels (x = 0.1, 0.15, 0.2, 0.25, 0.3) of yttrium doped ceria (YDC, Ce(1-x)Y xO2-δ) electrolytes were investigated by electron diffraction, high-resolution transmission electron microscopy (TEM), scanning TEM, and electron energy loss spectroscopy. Oxygen vacancy ordering was experimentally confirmed within the ordered structures. With increasing the doping level, the concentration of trivalent Ce cations was increased in YDC samples and such trivalent Ce cations were supposed to mainly exist in the ordered structures. Based on our electron microscopic observation and microanalysis, a crystal model for the ordered structures is proposed.
Keyword Doped ceria
ordered structure
EELS
HRTEM
Diffuse scattering
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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