近年来有三种利用晶粒间界效应的电子陶瓷引起应用和机理研究者的注意。这就是内边界层电容陶瓷、PTC(positive temperature coefficient)陶瓷和变阻器(varistors)陶瓷。一些掺杂钙钛矿型晶粒结构的陶瓷,其中的晶粒具有高电导率而晶粒间界是绝缘的,因而具有很高的等效介电常数,已广泛用于电容器的小型化,并有希望用于能量存贮。后两种晶界层陶瓷因为在于利用其电阻效应,对其电容效应研究的报道极少。其实,掺杂氧化锌陶瓷在低电压 In recent years, three kinds of electronic ceramics that utilize the grain boundary effect have attracted the attention of application and mechanism researchers. This is the inner boundary layer capacitor ceramic, PTC (positive temperature coefficient) ceramic and varistors ceramic. Some ceramics doped with a perovskite-type crystal structure in which the crystal grains have high electrical conductivity and the grain boundary is insulative have high equivalent dielectric constants and have been widely used for the miniaturization of capacitors, And there is hope for energy storage. The latter two kinds of grain boundary layer ceramic because of its use of the resistance effect, the capacitance effect of the study reported very little. In fact, doped ZnO ceramic at low voltage