Since finding the nonlinear electrical characteristics of SnO_2CoO_3Nb_2O_5 varistor system, material investigators have been trying to get more excellent SnO_2CoO_3Nb_2O_5 varistor system with higher nonlinearity by doping a series of metallic oxides.

• 自从SnO_2Co_2O_3Nb_2O_5系列压敏材料的电学非线性被发现以来,材料研究者们一直在尝试通过一系列的掺杂改性,以期得到更加优异的压敏特性。