Influence of ferroelectric domain texture on the performance of multilayer piezoelectric actuators

详细信息    查看全文

• 作者：Petra Kaufmann^a ; ¹ ; Sö ; ren Rö ; hrig^a ; ² ; Peter Supancic^b ; Marco Deluca^a ; ^b ; ^{marco.deluca@mcl.at}
• 关键词：PZT ; Multilayer piezoelectric actuators ; Domain texture ; Reverse Monte Carlo ; Polarised Raman spectroscopy
• 刊名：Journal of the European Ceramic Society
• 出版年：2017
• 出版时间：May 2017
• 年：2017
• 卷：37
• 期：5
• 页码：2039-2046
• 全文大小：1655 K
• 卷排序：37

文摘

Lead zirconate titanate (PZT)-based multilayer piezoelectric actuators (MAs) present a maximum in their piezoelectric properties when pre-stressed with a low mechanical load (ca. 50 MPa) along the longitudinal axis of the actuator. In this work, we investigate this phenomenon by combining polarised Raman spectroscopy with a Reverse Monte Carlo (RMC) method in order to quantify the domain orientation distribution of PZT-based MAs, both in-situ and at the remanent state, under combined applied electric field and mechanical load. Our study shows that the performance maximum of MAs is the result of two competing effects: (i) an increasing reservoir for non-180° domain switching for increasing applied compressive pre-stress and (ii) a large activation energy for domain switching at high pre-stresses. Hence, our study uncovers structure-property relationships in piezoceramic components that could be used to finely tune the electromechanical response of actuators.