Some theories and models was analysed in the base of experiment The main working and results are as follows:(1) The effect of Y_2O_3 doping (0.2-2mol%) on the nonlinear electrical behavior and dielectric properties of WO_3-based ceramics was investigated.

• 主要的工作和结果有下面几点:(1) 在Y_2O_3 掺杂量为0.；2-2mol%25的范围内研究了Y_2O_3 掺杂对WO_3 的非线性伏-安特性及介电性能的影响。