COOLING RATE EFFECTS IN ZNO VARISTORS

被引：11

作者：

CASTRO, MS ^{[1
]}

PERISSINOTTI, L ^{[1
]}

ALDAO, CM ^{[1
]}

机构：

[1] UNIV NACL MAR DEL PLATA,FAC CIERCIAS EXACTAS & NAT,RA-7600 MAR DEL PLATA,ARGENTINA

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 1992年 / 3卷 / 04期

关键词：

D O I：

10.1007/BF00703029

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Cooling rate effects on ZnO-Bi2O3 varistors are presented. In particular, the oxygen vacancies (V(o)+) concentration was determined by electron paramagnetic resonance (EPR) spectroscopy and related to the conductivity. It was found that a higher cooling rate provokes an increase of the V(o)+ concentration and a higher conductivity. Current density versus temperature curves are fitted with a modified Schottky barrier model which reflects a higher active donor concentration near the grain interface.

引用

页码：218 / 221

页数：4

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