An electrical conductivity relaxation study of La0.6Sr0.4Fe0.8CO0.2O3-δ

被引：0
|
作者：
Wang, S
van der Heide, PAW
Chavez, C
Jacobson, AJ [1 ]
Adler, SB
机构：
[1] Univ Houston, Mat Res Sci & Engn Ctr, Houston, TX 77204 USA
[2] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA
来源：
SOLID STATE IONICS | 2003年 / 156卷 / 1-2期
关键词：
La0.6Sr0.4Fe0.8Co0.2O3-delta; electrical conductivity relaxation; surface exchange; diffusion coefficient;
D O I：
10.1016/S0167-2738(02)00178-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electrical conductivity relaxation (ECR) experiments were carried out on La0.6Sr0.4Fe0.8Co0.2O3-delta '(LSFCO)' in the temperature range of 840 to 910 C and in the oxygen partial pressure range of 0.01 to 0.05 atm. The effects of annealing at 900 degreesC on the oxygen transport properties were investigated for individual samples. The values of D-O(2) = (D) over tilde (O)/Gamma(O) and k(ex)=k(chem)/Gamma(O) agree well with the result from isotope-exchange depth profile (IEDP) experiments. (C) 2003 Elsevier Science B.V All rights reserved.
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收藏
页码：201 / 208
页数：8
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