Microstructural effect on dielectric properties of Pb(Mg_(1/3)Nb_(2/3))O_3-PbTiO_3 with ZnO additive

摘要

Among the family of the complex perovskite com-pounds Pb(B'B")O3, lead magnesium niobate (PMN) is useful for capacitors, electrostrictive ac-tuators and optical devices because of its high permittivity, broad dielectric maxima and high electrostrictive strain [1,2]. Thus there has been a great deal of interest in the preparation of pure PMN powders as well as in the sintering and dielectric properties of PMN-based ceramics [3-6].