Dependence of lattice constant of Ba, Co-contained perovskite oxides on atmosphere, and measurements of water content

被引：25
作者：
Hashimoto, Daiki [1 ]
Han, Donglin [1 ]
Uda, Tetsuya [1 ]
机构：
[1] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan
来源：
SOLID STATE IONICS | 2014年 / 262卷
基金：
日本学术振兴会;
关键词：
Ba0.5Sr0.5CoxFe1 (-) O-x(3) (-) (delta); PrBaCo2O5 (+) (delta); Perovskite; Hydration; Proton conduction; DOPED BARIUM ZIRCONATE; PHASE-STABILITY; PRINCIPLES;
D O I：
10.1016/j.ssi.2013.12.029
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：
In this work, water content of Ba0.5Sr0.5CoxFe1-xO3-delta and PrBaCo2O5+delta was measured by Karl Fischer titration method. Dependence of the lattice constants of Ba0.5Sr0.5Co0.8Fe0.2O3-delta and PrBaCo2O5+delta on atmosphere was investigated by high temperature X-ray diffraction (HT-XRD) measurements. The results revealed that the lattice volumes of Ba0.5Sr0.5Co0.8Fe0.2O3-delta and PrBaCo2O5+delta increased when the atmosphere was altered from O-2 to Ar, due to a release of oxygen from the lattice in a reducing atmosphere. Significantly low water contents were measured for both Ba0.5Sr0.5CoxF1-xO3-delta and PrBaCo2O5+delta by Karl Fischer titration method. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：687 / 690
页数：4
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