摘要
本文根据理论上提出的BaTiO_3半导瓷晶界受主态密度N_s 与晶界势垒高度的关系,以及影响 PTC 效应的机理,探讨掺入不同量受主杂质Mn 和不同掺杂工艺过程对晶界势垒和PTC效应的改善。
Based on the influence of surface aceeptor density N_s on boundary barrier and the mechanism of its effect on PTC property,different acceptor Mn dopings and different doping processes with corresponding boundary barrier and PTC property were discussed.
关键词
半导瓷
正温度系数效应
界面势垒
BaTiO_3 semi-condUcting ceramics
PTC(positive temperature coefficient)effect
boundary barrier
