Advances in Lead-Free Piezoelectric Materials for Sensors and Actuators

Sensors

Elena Aksel¹ 

[1] Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA; E-Mail

关键词: ceramics;    piezoelectrics;    ferroelectrics;    electromechanical;   

DOI  :  10.3390/s100301935

来源: mdpi

【 摘 要 】

Piezoelectrics have widespread use in today’s sensor and actuator technologies. However, most commercially available piezoelectric materials, e.g., Pb [Zr_xTi_1−x] O₃ (PZT), are comprised of more than 60 weight percent lead (Pb). Due to its harmful effects, there is a strong impetus to identify new lead-free replacement materials with comparable properties to those of PZT. This review highlights recent developments in several lead-free piezoelectric materials including BaTiO₃, Na_0.5Bi_0.5TiO₃, K_0.5Bi_0.5TiO₃, Na_0.5K_0.5NbO₃, and their solid solutions. The factors that contribute to strong piezoelectric behavior are described and a summary of the properties for the various systems is provided.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.