EFFECTS OF RARE-EARTH CATIONS DOPED FOR LA SITE ON THE OXIDE IONIC-CONDUCTIVITY OF LAGAO3-BASED PEROVSKITE-TYPE OXIDE

被引：270

作者：

ISHIHARA, T

MATSUDA, H

TAKITA, Y

机构：

[1] Department of Applied Chemistry, Faculty of Engineering, Oita University, Oita, 870-11

来源：

SOLID STATE IONICS | 1995年 / 79卷

关键词：

IONIC CONDUCTIVITY OXIDE; PEROVSKITE; LAGAO3; ND ADDITION;

D O I：

10.1016/0167-2738(95)00054-A

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：

For the suppression of hole conduction in the high oxygen partial pressure range, effects of the addition of small amount of rare earth cations were investigated in this study with La0.8Sr0.2Ga0.8Mg0.2O3-delta. It was found that the addition of small amount of rare earth cations for La site in LaGaO3 was effective for the suppression of hole conduction under high oxygen partial pressure, albeit the electrical conductivity decreased slightly. In particular, perovskite oxide of (La0.9Nd0.1)(0.8)Sr0.2Ga0.8Mg0.2O3-delta exhibits almost pure oxide ionic conduction over the oxygen partial pressure from 1 to 10(-21) atm, and the electrical conductivity attains the value of log (sigma/S cm(-1)) = -0.5 at 1223 K.

引用

页码：147 / 151

页数：5

共 7 条

[1]

Choudhary C.B., 1980, SOLID ELECTROLYTES T, P40

[2]

ETSELL TH, 1970, CHEM REV, V70, P341

[3] IMPROVED OXYGEN-ION CONDUCTIVITY OF NDALO3 PEROVSKITE-TYPE OXIDE BY DOPING WITH GA [J].