A STUDY OF BATIO3-BAPBO3 CERAMIC COMPOSITES

被引：10

作者：

CHEN, A

ZHI, Y

BAO, YH

机构：

[1] ZHEJIANG UNIV,DEPT PHYS,HANGZHOU 310027,PEOPLES R CHINA

[2] ZHEJIANG UNIV,DEPT MAT SCI & ENGN,HANGZHOU 310027,PEOPLES R CHINA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 39期

关键词：

Barium metaplumbate - Electric transport properties - Volume fraction;

D O I：

10.1088/0953-8984/6/39/012

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The ceramic composites prepared from donor-doped ceramic BaTiO3 and the conducting ceramic BaPbO3 are studied in the present paper. The XRD result shows that the composites consist of the BaTiO3 phase and the BaPbO3 phase. An abrupt decrease in the curve of resistivity versus BaPbO3 content was observed; this was explained by the three-dimensional percolation model for the two-phase BaTiO3-BaPbO3 composite, and the percolation volume threshold phi(c) obtained was near 0.14. Beyond the percolation threshold, the electrical transport properties of the composites are similar to those of BaPbO3 ceramics, The positive temperature coefficient effect found in donor-doped BaTiO3 disappears above a BaPbO3 volume fraction of about 0.04.

引用

页码：7921 / 7925

页数：5

共 5 条

[1] A STUDY OF THE BATIO3-YBA2CU3O6+DELTA CERAMIC COMPOSITE SYSTEM [J].