A manometric method for the determination of chemical diffusion in non-stoichiometric oxides:: Example of (La,Sr)MnO3

被引：16

作者：

Bak, T ^{[1
]}

Nowotny, J

Rekas, M

Sorrell, CC

Vance, ER

机构：

[1] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

[2] Australian Nucl Sci & Technol Org, Div Mat, Lucas Hts, NSW 2234, Australia

来源：

SOLID STATE IONICS | 2000年 / 135卷 / 1-4期

关键词：

manometric method; chemical diffusion; non-stoichiometric oxides;

D O I：

10.1016/S0167-2738(00)00636-6

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：

This paper describes the application of a manometric method for the determination of the chemical diffusion coefficient for the electrode material (La0.8Sr0.2)MnO3 in the temperature range 500-850 degreesC. In the manometric method, the progress of a chemical reaction, such as oxygen incorporation into a non-stoichiometric oxide, can be monitored by the determination of changes in oxygen partial pressure. It was observed that the diffusion data obtained for oxidation and reduction differ essentially in both absolute values and their temperature dependence. (C) 2000 Elsevier Science BN. All rights reserved.

引用

页码：557 / 561

页数：5

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