摘要
本研究工作测量了Ba_(0.5)Sr_(0.5)TiO_3湿敏陶瓷在直流电场下的电流-时间特性,用等效电路模型进行了分析,并用指数函数对实验曲线进行了拟合,计算了不同湿度下离子电导、电子电导的绝对量和相对量.结果表明,随着相对湿度的增加,离子和电子电导的绝对量均增大,而电子电导所占的比例下降.文中还对材料的导电机制进行了简单的分析讨论.
The current-time characteristics of Ba0.5Sr0.5TiO3 humidity-sensitive material under d.c. voltage has measured. The results werel analyzed using equivalent circuit model and calculated by exponential function. It is illustrated that the ionic conduction and its proportion increase with the increasing relative humidity. The experimental results as well as the conduction mechanism of the material are discussed.
出处
《传感技术学报》
CAS
CSCD
1992年第1期8-11,共4页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金资助项目68901003
