DopedSrTiO3capacitor-varistormultifunctionalceramicswerefabricatedbyasinglesinteringprocess.ACcompleximpedanceanalysiswasperformedtoinvestigateelectricalfeaturesofgrainsandgrainboundariesforbothas-reducedceramicandreoxidizedceramics.Theresultsshowedthattheas-reducedceramicexhibitedinductiveresponseathighfrequenciesabove2MHz,whichisattributedtothecontributionofelectronbehaviorinsemiconductinggrains.Thehighfrequencyinductiveresponsedisappearedinimpedanceplotsofreoxidizedceramics.
