Abstract

The solid solution of relaxor and lead titanate single crystals have been an excellent choice for electromechanical applications such as energy harvesters, SONARs, transducers, and biomedical equipment. The mechanical quality factor (Q_m) plays a crucial role in such applications using high power resonance condition. In this work, 32 mode (011) oriented along thickness direction, Generation-III piezoelectric single crystals based on PMN-PZT [71Pb(Mg_1/3Nb_2/3)O₃–29PbZrTiO₃] have been grown by solid state single crystal growth method. The Mn doping concentration in the crystals were systematically controlled within the range of 0 to 1.0 mol.%. The piezoelectric properties noticeably varied with the Mn doping concentration when the content is over 0.1 mol.%. In order to obtain significant enhancement in Q_m in PMN-PZT single crystals, especially, the Mn doping concentration should be higher than 0.7 mol.% (which offers highest figure of merit) for high power resonance applications.

Graphic Abstract

摘要

松弛剂和钛酸铅单晶的固溶体一直是机电应用（例如能量收集器，SONAR，换能器和生物医学设备）的绝佳选择。机械品质因数（Q _m）在使用大功率谐振条件的此类应用中起着至关重要的作用。在这项工作中，沿厚度方向定向的32模（011），基于PMN-PZT [71Pb（Mg _1/3 Nb _2/3）O ₃ –29PbZrTiO ₃的第三代压电单晶已经通过固态单晶生长方法来生长。晶体中的Mn掺杂浓度被系统地控制在0至1.0mol。％的范围内。当含量超过0.1mol。％时，压电性能随Mn掺杂浓度而显着变化。为了在PMN-PZT单晶中显着提高Q _m，特别是在高功率谐振应用中，Mn掺杂浓度应高于0.7 mol。％（提供最高品质因数）。

图形摘要