Thermodynamic properties of Sr-doped LaMnO3 perovskite in the La-Sr-Mn-O system

被引：5
|
作者：
Zheng, F [1 ]
Pederson, LR
机构：
[1] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA
[2] Pacific NW Lab, Dept Chem & Mat Sci, Richland, WA 99352 USA
[3] Washington State Univ TriCities, Richland, WA USA
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1999年 / 146卷 / 08期
关键词：
D O I：
10.1149/1.1392013
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Thermodynamic properties of Sr-doped perovskite-type lanthanum manganites (LSM) were generated by measuring the electromotive force (EMF) of rest materials, using the solid galvanic cell technique. The cell consisted of an anode (SrO/SrF2), an electrolyte (CaF2 or SrF2) and a cathode (LSM/SrF2). Two types of cells were tested in which type I used a CaF2 electrolyte and type II used a SrF2 electrolyte. The activity of SrO substituting into various LSM compositions was calculated using the measured EMF. The Sr content was varied from 0.16 to 0.6 mol, and the temperature of interest varied from 700 to 1000 degrees C. It was found that the SrO activity decreased with increasing temperature (at fixed composition) and increased with increasing Sr content (at fixed temperature). (C) 1999 The Electrochemical Society. S0013-4651(98)11-109-6. All rights reserved.
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页码：2817 / 2820
页数：4
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