Ternary 0.552Pb(Ni_1/3Nb_2/3)O₃-xPbZrO₃-(0.448-x)PbTiO₃ (PNN-PZ-PT) ceramics near the triple point compositions were fabricated by an improved two-step sintering method. The triple point composition 0.552PNN-0.135PZ-0.313PT ceramic has outstanding piezoelectric performance with piezoelectric coefficient d₃₃ = 1200 pC/N. Its easy fabrication and low cost make this piezoelectric material an excellent candidate for high sensitivity sensors and ultrasonic transducers. The evolution of domain structures for ceramics with composition near the triple point provides deeper insight into the mechanism of ultrahigh piezoelectric properties of PNN-PZ-PT ceramics.

通过改进的两步烧结法制备接近三相点组成的三元 0.552Pb(Ni _1/3 Nb _2/3 )O ₃ -xPbZrO ₃ -(0.448-x)PbTiO ₃ (PNN-PZ-PT) 陶瓷。三相点成分0.552PNN-0.135PZ-0.313PT陶瓷具有优异的压电性能，压电系数d ₃₃  = 1200 pC/N。其易于制造和低成本使这种压电材料成为高灵敏度传感器和超声波换能器的绝佳候选材料。组成接近三相点的陶瓷畴结构的演变为更深入地了解 PNN-PZ-PT 陶瓷的超高压电性能机制提供了依据。