Mixed conduction behavior in nanostructured lanthanum gallate

被引：13
|
作者：
Park, Hee Jung [1 ]
Kwak, Chan [1 ]
Lee, Sang Mock [1 ]
机构：
[1] SAIT, Yongin 446712, South Korea
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 05期
关键词：
Nanostructure; Lanthanum gallate; Mixed ionic and electronic conduction; Grain boundary; Space charge effect; PARTIAL ELECTRONIC CONDUCTIVITY; ELECTRICAL-PROPERTIES; DOPED LAGAO3; OXIDE; SR; TRANSPORT; LSGM;
D O I：
10.1016/j.elecom.2009.02.035
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Electrical conduction in nanostructured 10 mol% Sr- and 15 mol% Mg-doped lanthanum gallate was investigated. The grain boundary conductivity shows mixed ionic and electronic conduction, while the grain conductivity shows ionic conduction. This is attributed to the increase of the contribution of the electron-hole in the grain boundary by the space charge effect. The overall electrical conductivity is governed by the grain boundary conductivity such that nanostructured lanthanum gallate becomes a mixed conductor. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：962 / 964
页数：3
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