本文以Heywang模型为基础，分析了影响BaTiO3PTCR陶瓷阻温系数α的主要因素，并给出了解析关系．各参数的测量结果与该关系基本相符．
Main factors influencing α(temperature coefficient of resistance) of BaTiO3 PTCR ceramicswere analysed based on Heywang model. A relation between α and acceptor density at grainboundaries, donor density and Curie constant was given, and the experimental results are inreasonable consistence with the relation.
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