Change in the compositional distribution in perovskite solid solutions during the sintering by SPS

As an application of characteristic of spark plasma sintering (SPS) method, which can produce highly sintered material with almost no change in compositional distribution, sintered materials that consist of different compositions were prepared. Perovskite three component system, xPb(Zn1/3Nb2/3)O3–yPbZrO3–(1−x−y)PbTiO3, exhibits a very sharp pyroelectric peak at phase transition temperature between FRL and FRH phases. When a mixture of calcined materials having different compositions of this system was sintered by SPS, the compositional distribution in the starting mixture was almost maintained. The sintered material exhibited high pyroelectric coefficient over a wide temperature range.