LEAD TITANATE CERAMICS WITH POSITIVE TEMPERATURE COEFFICIENTS OF RESISTIVITY

被引：26

作者：

KUWABARA, M

机构：

[1] Department of Applied Chemistry, Kyushu Institute of Technology, Tobata

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 05期

关键词：

Curie temperature; grains; lead titanate; positive temperature coefficient of resistivity; semiconductors;

D O I：

10.1111/j.1151-2916.1990.tb05221.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Lead titanate ceramics were successfully made into semiconductors exhibiting anomalous positive temperature coefficients of resistivity (PTCR) about 3 orders of magnitude above the Curie point (480° to 490°C). The PTCR characteristics of the materials prepared were found to be unstable and to show a significant degradation in both room‐temperature resistivity and magnitude of the PTCR effect with time. The instability of the PTCR characteristics observed in the present materials is considered to be related to the morphologies of their grain structures. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：1438 / 1439

页数：2

共 10 条

[1] RESISTIVITY ANOMALY IN DOPED BARIUM TITANATE [J].