电子元件与材料2011，Vol.30Issue(1)：21-24,4.
空气中烧结制备SrTiO3基压敏电阻器的研究
Study on the SrTiO3-based varistor prepared by sintering in air
摘要
Abstract
With the addition of La2O3-PbO-ZnO in mw materials, SrTiO3-based varistor ceramics were prepared by sintering in air. The effects of dopant on the phase structure, morphology and electrical properties of the SrTiO3-based varistor ceramics were investigated, and the mechanism behind the formation of SrTiO3-based semiconductor ceramics in oxidizing atmosphere was discussed. The results indicate that the prepared SrTiO3-based varistors exhibit high relative permittivity (εr = (1.51～2.78)×104) and nonlinear J-E characteristics (α＝ 5.5～7.2). Formation of SrTiO3-based semiconductor ceramics in oxidizing atmosphere can be attributed to that PbO doping leads to formation of active positions in SrTiO3 and hence promotes the formation of donor defects in SrTiO3 by promoting the substitution between rare earth ions and the ions at active positions.关键词
钛酸锶/压敏电阻器/介电特性Key words
strontium titanate/ varistors/ dielectric properties分类
信息技术与安全科学引用本文复制引用
赵景畅,李娴,李龙土..空气中烧结制备SrTiO3基压敏电阻器的研究[J].电子元件与材料,2011,30(1):21-24,4.基金项目
云南省自然科学基金资助项目(No.2007E024M) （No.2007E024M）
