ELECTRICAL-CONDUCTIVITY, SEEBECK COEFFICIENT AND DEFECT CHEMISTRY OF CA-DOPED YCRO3

被引：49
作者：
CARINI, GF
ANDERSON, HU
SPARLIN, DM
NASRALLAH, MM
机构：
[1] Ceramic Engineering Department, University of Missouri-Rolla, Rolla
来源：
SOLID STATE IONICS | 1991年 / 49卷
基金：
美国能源部;
关键词：
D O I：
10.1016/0167-2738(91)90091-O
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：
The electrical transport behavior and defect structure of Ca-doped YCrO3 were studied using electrical conductivity and Seebeck coefficient measurements as a function of oxygen activity and temperature. Defect models derived from the electrical conductivity data were found to adequately relate the concentration of charge Carriers to the acceptor dopant and oxygen vacancy concentrations. Thermodynamic properties were calculated and found to be consistent with the model. Activation energy and carrier mobility data were also obtained. The analysis of the electrical conductivity, Seebeck and mobility data suggest that the conduction process in Ca-doped YCrO3 occurs via the small polaron hopping mechanism.
引用
收藏
页码：233 / 243
页数：11
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