Properties of PMSZT Piezoelectric Ceramics near Morphotropic Phase Boundary
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第3期
论文作者：Xu Mingxia Lu Cuimin LUO Yunfei Sun Qingchi
Key words：ternary system; crystallographic phase; microstructure electric-properties; temperature stability morphotropic phase boundary;
Abstract: Pb1. 04 ( Mn1/3 Sb2/3 ) 0.05ZrxTi0.95-xO3 (x = 0.45 ～ 0. 485 ) ternary system was prepared by using two-stage technique with solid oxides as raw materials. The crystallographic phase, microstructure, electric-properties and temperature stability of the system were studied. The results show that pure perovskitic structure was obtained by calcination at 900 ℃ for 2 h. Near the morphotropic phase boundary of Zr concentration x = 0.47, the rhombohedral phase and tetragonal phase region coexist. Most of the compositions show a diffuse phase transition with a strong frequency. PMS-PZT quinary system exhibits a well-situated property near the morphotropic phase boundary. The changes of resonant frequency at morphotropic phase boundary are smaller than others. The variation of resonant frequency reflects the transition from tetragonal phase to rhombohedral phase. The optimized results of εT33/ε0 ( 1420), d33 (324pC/N), Kp (62%), Qm (1180) ,tanδ(0. 0029) are obtained with Zr concentration x =0.47.
Xu Mingxia1，Lu Cuimin1，LUO Yunfei1，Sun Qingchi1
(1.Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China)
Abstract:Pb1. 04 ( Mn1/3 Sb2/3 ) 0.05ZrxTi0.95-xO3 (x = 0.45 ～ 0. 485 ) ternary system was prepared by using two-stage technique with solid oxides as raw materials. The crystallographic phase, microstructure, electric-properties and temperature stability of the system were studied. The results show that pure perovskitic structure was obtained by calcination at 900 ℃ for 2 h. Near the morphotropic phase boundary of Zr concentration x = 0.47, the rhombohedral phase and tetragonal phase region coexist. Most of the compositions show a diffuse phase transition with a strong frequency. PMS-PZT quinary system exhibits a well-situated property near the morphotropic phase boundary. The changes of resonant frequency at morphotropic phase boundary are smaller than others. The variation of resonant frequency reflects the transition from tetragonal phase to rhombohedral phase. The optimized results of εT33/ε0 ( 1420), d33 (324pC/N), Kp (62%), Qm (1180) ,tanδ(0. 0029) are obtained with Zr concentration x =0.47.
Key words:ternary system; crystallographic phase; microstructure electric-properties; temperature stability morphotropic phase boundary;
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