Dielectric Relaxation Properties of 0.5Ba(Zr 0.2 Ti 0.8 )O 3 -0.5(Ba 0.7 Ca 0.3 )TiO 3 Ceramics with CuO Addition

We investigated the dielectric relaxation properties ceramics with CuO addition. With increasing CuO addition, the lattice parameter was increased by substitution of small amount ion in B-site of ceramics. Also the grain size and the maximum dielectric constant of ceramics was decreased with increasing amounts of CuO addition. Moreover, the diffused phase transition properties () of ceramics was increased by compositional fluctuation with increasing of CuO amount, changed from 1.45 at 1 wt% CuO addition to 1.94 at 7 wt% CuO addition.