Oxide-ion conductivity of the oxygen deficient perovskite solid-solution system, (Ba0.5-xSrxLa0.5)2(In1-yMy)2O5.5 (M=Y or Ga)

被引：24

作者：

Kakinuma, K ^{[1
]}

Yamamura, H

Atake, T

机构：

[1] Kanagawa Univ, Fac Engn, Dept Appl Chem, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan

[2] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2002年 / 69卷 / 03期

关键词：

crystal symmetry; oxide-ion conductivity; perovskite structure; unit cell free volume;

D O I：

10.1023/A:1020616324734

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In order to elucidate the mechanism of oxide-ion conductivity for (Ba0.5-xSrxLa0.5)(In1-yMy)(2)O-5.5 (M=Y or Ga, 0less than or equal toxless than or equal to0.2, 0less than or equal toyless than or equal to0.2) solid-solution system, the electrical conductivity was measured as a function of oxygen partial pressure and temperature, and the results were investigated in terms of a dopant content and unit cell free volume. The system was confirmed to be an oxide-ion conductor from the oxygen partial pressure dependence on electrical conductivity. The oxide-ion conductivity increased with increasing the unit cell free volume at first. However, it showed a maximum at a value of free volume, and then decreased. The decreasing conductivity vs. the volume would be related to the crystal symmetry change.

引用

页码：897 / 904

页数：8

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