Effect of Sintering Temperature on Microstructure and Impedance Propertiesof Zn0.97Cu0.01V0.02O Ceramics

Abstract

This work present was to study the effect of sintering temperature on microstructure and impedance properties of Zn0.97Cu0.01V0.02O (ZCV) ceramics which were prepared by mixed oxide method. The ceramics were sintered at the temperature of 900, 950, 1000 and 1050oC for 5 hours. The thermo gravimetric (TGA) and differential thermal analysis (DTA) were employed to study the suitable condition for sintering. The ceramics microstructure was carried out by x-ray diffraction (XRD) technique and scanning electron microscopy (SEM). The impedance properties of the ceramics were also studied and determined. The single phase of ZnO was found in every samples. The c/a ratio was decreased and the grain size of ZCV sample was increased with increasing of the sintering temperature. The impedance Cole-Cole diagram were shown at the range of frequency 80 Hz to 1 MHz. Moreover, the real and complex resistivities value were found to be 1.28×10 to 1.04×107  and (-1.94×10-1)to (-7.49×106), respectively.