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热分解氧化反应对TiO2电容压敏电阻器性能的影响

罗建军; 方湘怡; 武明堂   

  1. 西安交通大学电信学院, 西安 710049
  • 收稿日期:1999-03-01 修回日期:1999-04-23 出版日期:2000-02-20 网络出版日期:2000-02-20

Effect of Thermal Decomposition Accompanying With Oxidation on TiO2 Capacitor-varistor Ceramics

LUO Jian-Jun; FANG Xiang-Yi; WU Ming-Tang   

  1. School of Electronics and Information Engineering; Xi an Jiaotong University; Xi an 710049; China
  • Received:1999-03-01 Revised:1999-04-23 Published:2000-02-20 Online:2000-02-20

摘要: 研究了具有热分解氧化反应的CuO、MnO等的一类氧化物对TiO压敏电阻器性能的影响,采用C—V分析、I—V测量和介电测量等实验手段,分析了它们的作用机理.结果发现,在晶界处发生的热分解氧化反应能增加界面态密度,提高晶界势垒高度,从而改善TiO电容压敏电阻器的非线性性能.

关键词: TiO2电容压敏电阻器, CuO, MnO2, 晶界势垒

Abstract: The influence of oxide such as CuO and MnO2 which have the character of decomposition accompanying with oxidation on the TiO2 capacitor-varistor ceramics was studied. Based onthe results of C - V analysis, I - V analysis and dielectric measurements, their working mechanismwas analyzed. The results show that the decomposition accompanying with oxidation is useful forincreasing the surface state density and the height of grain-boundary barrier, and therefore improves the nonlinear property of TiO2 capacitor-varistor ceramics.

Key words: TiO2 capacitor-varistor ceramics, CuO, MnO2, grain-boundary barrier

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