Modelling and characterization of mixed ionic-electronic conduction in Gd-2(Ti1-xMnx)(2)O-7+y

被引：23

作者：

Porat, O

Spears, MA

Heremans, C

Kosacki, I

Tuller, HL

机构：

[1] Crystal Phys. Electroceramics Lab., Dept. of Mat. Sci. and Engineering, Massachusetts Inst. of Technology, Cambridge

来源：

SOLID STATE IONICS | 1996年 / 86-8卷

关键词：

mixed ionic electronic conductivity; nonstoichiometry; defect chemistry; Gd2Ti2O4; pyrochlore; cathode;

D O I：

10.1016/0167-2738(96)00113-0

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：

Mixed ionic and electronic conductivity was obtained in Gd2Ti2O7 by doping with Mn. This was confirmed by measuring the nonstoichiometry and the electrical conductivity as a function of oxygen partial pressure, temperature and Mn concentration. The results were combined with the defect and transport models, to derive key thermodynamic and kinetic parameters of Gd2Ti2O7 doped with Mn.

引用

页码：285 / 288

页数：4