Mixtures of ZnO doped with CuO and Na3BiO3 as additive were prepared by solid state reaction from the calcined oxides. SEM and AFM revealed the presence of inter-granular phase. Additives present in grain boundaries between ZnO grains.XRD showed that no binary compound was formed and there are increase in dislocation density with additives. The conductivity and the dielectric constant are highly dependent on the microstructure of conducting grains surrounded by this insulating oxide barrier. The amounts of additives affect the coefficient of non-linearity and breakdown voltage. Microstructure had been studied with SEM and AFM.
© 2019 MTPR. All Rights Reserved