The effect of CeO2 on the electric properties of TiO2 based capacitor-varistor multi-function ceramics

被引：0

作者：

Luo, SH ^{[1
]}

Tang, ZL

Li, HY

Yan, JP

Zhang, ZT

Xiong, XZ

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Guangzhou Sunrise Elect Co Ltd, Guangzhou 510335, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2004年 / 33卷 / 07期

关键词：

TiO2; varistors; cerium dioxide; breakdown voltage; nonlinear coefficient; multi-function;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect Of CeO2 on Nb-doped-TiO2 based capacitor-varistors was investigated and analyzed by varistor and dielectric measurements. It was found that the CeO2 dopant had a significant effect on the varistor properties and dielectric properties of Nb-doped-TiO2 based capacitor-varistors ceramics sintered at 1350degreesC because of the formation of a phase of perrierite containing cerium, silicon and titanium at the grain boundaries. An optimal composition dopant with 0.4 mol% CeO2 exhibited a low breakdown voltage of 15.84 V/mm, a nonlinear coefficient of 4.62. An ultrahigh relative dielectric constant (epsilon(gamma) = 158 600) as well as relatively low loss (tg delta = 0.32) were found in room temperature.

引用

页码：748 / 751

页数：4

共 11 条

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