Evidence of intragranular segregation of dopant cations in heavily yttrium-doped ceria

被引：32
|
作者：
Ou, Ding Rong
Mori, Toshiyuki
Ye, Fei
Zou, Jin
Auchterlonie, Graeme
Drennan, John
机构：
[1] Fuel Cell Mat Ctr, Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan
[2] Univ Queensland, Sch Engn, St Lucia, Qld 4072, Australia
[3] Univ Queensland, Ctr Microscopy & Microanal, St Lucia, Qld 4072, Australia
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 01期
关键词：
D O I：
10.1149/1.2372224
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The intragranular segregation of dopant cations in 25 atom % yttrium- doped ceria was explored by energy filtering transmission electron microscopy. Through the comparison between samples sintered at different temperatures, the correlation between the intragranular segregation of dopant cations and the formation of nanosized domains in heavily doped ceria is clearly shown. It is suggested that the segregation can lead to the domain formation, and the oxygen vacancies may also segregate into the domains with the dopant cations. (c) 2006 The Electrochemical Society.
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页码：P1 / P3
页数：3
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