Lead-free ferroelectric composite ceramics Na_(0.5)Bi_(0.5)TiO_3:ZnO(BNT:ZnO) were prepared by a two-step solid phase synthesis method. The sintering ability, microstructures and ferroelectric properties of the composites were investigated by X-ray diffraction and scanning electron microscopy. The results show that the incorporation of 20%(mole fraction) ZnO leads to the formation of the third phase Zn_2TiO_4, compared to pure BNT phase. The amount of Zn_2TiO_4 gradually increases with the increase of sinte...