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(Sr,Pb)TiO_3系V型PTC材料研究
作者:周东祥 吕文中 龚树萍 黎步银 
单位:华中理工大学固体电子学系 
关键词:钛酸锶铅材料 V型阻温特性 铅挥发 
分类号:TQ174.756
出版年,卷(期):页码:1994,22(4):0-0
DOI:
摘要:
本文研究了(Sr,Pb)TiO_3系V型PTC材料的制备及导电机理。指出该材料的PTC效应仍起源于受主态在晶界形成的势垒,其强烈的NTC效应则是由于载流子的生成能和迁移激活能较大所引起。
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The preparation and the electrical conduction mechanism of(Sr,Pb)TiO_3 material with V-type resistivity-temperature characteristics are investigated in this paper.The positive temperature coefficient effect ofthis material originates from the penetration of oxygen in grain boundaries,mealwhile the negative temperaturecoefficient effect is due to the high formation energy of the carriers and the high activation energy of their diffu sion.
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参考文献:
1岩谷昭一,增村均,田口号春男,等。V型特性PTC材料。1988;19(5):332周东祥,龚树萍。PTC材料及应用.武汉:华中理工大学出版社,1989:123白崎信一。粒界研究思,1991;22(4):24吕文中,周东祥,龚树萍。氧化物半导瓷中晶界势垒的起源。华中理工大学学报,1994;22(3):955李翰如.电介质物理导论.成都:成都科技大学出版社,1990:277
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