Effect of Thermal Decomposition Accompanying With Oxidation on Tio_2 Capacitor-varistor Ceramics
LUO Jian-Jun;FANG Xiang-Yi;WU Ming-Tang(School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China)
The influence of oxide such as CuO and MnO_2 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 TiO_2 capacitor-varistor ceramics.