Study on the electrical properties of single grain boundaries in BaTiO3 ceramics

被引:2
|
作者
Zhang, F [1 ]
Cao, ZC [1 ]
机构
[1] SHANGHAI UNIV,SHANGHAI 201800,PEOPLES R CHINA
关键词
D O I
10.1063/1.362837
中图分类号
O59 [应用物理学];
学科分类号
摘要
In the article, the electrical properties of single grains and single grain boundaries in donor doped BaTiO3 ceramics have been investigated. The results show that the grains have no positive temperature coefficient of resistance effect (PTCR effect) if the influence of electrode was neglected. The results also show that different grain boundaries have various PTCR effect. The characteristics of current-voltage do not follow the Heywang model and accord with our modified model. The maximum barrier heights of single grain boundaries are also deduced experimentally. (C) 1996 American Institute of Physics.
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页码:1033 / 1036
页数:4
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