MICROSTRUCTURAL AND ELECTRICAL STUDY OF (Ba0.6Sr0.4) (Zr1-XTiX)O3 CERAMICS

Ceramics of (Ba0.6Sr0.4)(Zr1-xTix)O3 (x=0.40,0.50) samples were prepared by solid state reaction method. Micro structural study was performed by scanning electron microscope revealed the particle sizes are in the range of 0.8 µm. The structures are irregular in shape. Dc resistivity property was studied with respect to temperature from room temperature to 673 K. temperature of maximum resistivity (Tmax) are around 443 K and 378 K. dc dielectric constant, ac dielectric constant and dielectric loss were studied with respect to temperature from room temperature to 673 K at 100 Hz frequency. At higher temperature the dielectric constant of BSZT40 and BSZT50 is high. In the low frequency range dissipation factor is determined by the influence of ion conductivity