【摘要】 本文分析了（Ba-Pb）TiO₃系半导瓷材料中载流子浓度与铅含量之间的关系,针对这类高含铅的PTC材料中载流子浓度小的特点,重点讨论了掺杂元素锰对其室温电阻率和PTC效应的影响,并且指出,制备高含铅PTC半导瓷材料可以不掺或少掺锰。更多还原

【Abstract】 The relationship between Pb-content and carrier concentration in semiconducting ceramics of (Ba-Pb)TiO3 series is discussed. With the characteristic that the carrier concentration is usually rather low in high Pb-content (Ba-Pb) TiO3 PTC ceramic in mind, the influence of Mn-dopant on its room temperature resistivity and PTC effect s is investigated at some length. It is suggested that no Mn-dopant or only a small amount of Mn-dopant should be used.更多还原