论文标题
超高测量的单极应变大于2％的多晶体大块压电：圆盘尺寸的效果
Ultrahigh measured unipolar strain greater than 2 % in polycrystalline bulk piezoceramics: Effects of disc dimension
论文作者
论文摘要
散装的多晶压电陶瓷在广泛的应用中广泛用作致动器，传感器和传感器。对于执行器应用，希望压电陶瓷给出尽可能大的电场驱动单极应变。近年来，对这种压电陶瓷材料的设计和开发越来越感兴趣。在这里，我们表明，基于BATIO3的PZT和NA0.5BI0.5TIO3基于PZT的压电盘（直径10毫米）基于基于BATIO3的圆盘（基于BATIO3）的圆盘（基于BATIO3）的圆盘（基于BATIO3）的圆盘（基于BATIO3）的圆盘（基于BATIO3）的圆盘（基于BATIO3）的圆盘（Dipoy3 tioceramics）可以显示出非常大的单极菌株2至3％时，当盘的厚度减小到200微米或下方时。这伴随着双极应变场环中不对称性的增加。这份简短报告的动机是使研究界意识到在压电陶瓷中的这种重要效果，并鼓励对这种有趣现象的讨论/研究，该现象适用于所有压皮剂。
Bulk polycrystalline piezoelectric ceramics are extensively used in wide ranging applications as actuators, transducers, and sensors. For actuator applications, it is desirable that the piezoelectric ceramic gives as large electric field driven unipolar strain as possible. In recent years there is an increasing interest in the design and development of such piezoceramic materials. Here we show that piezoceramic discs (10 mm diameter) of PZT, BaTiO3-based and Na0.5Bi0.5TiO3-based polycrystalline piezoceramics can show very large unipolar strain 2 to 3 % when the thickness of the discs is reduced to 200 microns or below. This is accompanied by increasing asymmetry in the bipolar strain-field loops. The motivation of this brief report is make the research community aware of this important effect in piezoceramics and encourage discussion/research on the this interesting phenomenon, which is applicable to all piezoceramics.
