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首页> 外文期刊>Journal of the European Ceramic Society >Revisiting the structural stability and electromechanical properties in lead zinc niobate-lead titanate-barium titanate (PZN-PT-BT) ternary system
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Revisiting the structural stability and electromechanical properties in lead zinc niobate-lead titanate-barium titanate (PZN-PT-BT) ternary system

机译：重新探测铅锌铌酸铅钛酸盐 - 钛酸铅（PZN-PT-BT）三元体系中的结构稳定性和机电性能

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摘要

Lead zinc niobate-lead titanate (PZN-PT) system is of particular interest for scientific researches and commercial applications due to the unique relaxation feature and superior electromechanical responses. However, it is difficult to prepare polycrystalline ceramics near the morphotropic phase boundary due to the stability of a competing lead niobate pyrochlore phase. BaTiO3 (BT) was reported to be an effective perovskite phase stabilizer at a cost of reduction in Curie temperature and piezoelectric properties. Herein, the amount of BT in PZN-PT-BT system and the sintering conditions were optimized to simultaneously stabilize the perovskite phase and maintain high dielectric and piezoelectric response. An optimum piezoelectric coefficient d(33) similar to 870 pC/N along with a T-m similar to 133 degrees C and an electromechanical coupling coefficient k(33) similar to 0.61 was obtained in the PZN-8PT-6BT ceramics sintered at 1100 degrees C. The low sintering temperature, wide processing window, and improved dielectric and piezoelectric properties make PZN-PT-BT ceramics potential candidates for piezoelectric devices.
机译：由于独特的弛豫特征和卓越的机电反应，铅锌铌酸铅钛酸铅（PZN-PT）系统对科研和商业应用特别感兴趣。然而，由于竞争引线铌酸纤维纤维相的稳定性，难以制备Morphotopic相位边界附近的多晶陶瓷。据报道，BATIO3（BT）是一种有效的PEROVSKITE相位稳定剂，其成本降​​低了居里温度和压电性能。这里，优化PTN-PT-BT系统中BT的BT的量和烧结条件，以同时稳定钙钛矿相并保持高介电和压电响应。在1100摄氏度烧结的PZN-8PT-6BT陶瓷中，获得了类似于870cc / n的最佳压电系数d（33）以及类似于133摄氏度的TM和类似于0.61的机电耦合系数K（33） 。低烧结温度，宽处理窗口和改进的电介质和压电性能使得PZN-PT-BT陶瓷潜在的压电装置候选物。

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