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Advances in Lead-Free Piezoelectric Materials for Sensors and Actuators

Department of Materials Science and Engineering, University of Florida, 100 Rhines Hall, Gainesville, FL 32611, USA
Author to whom correspondence should be addressed.
Sensors 2010, 10(3), 1935-1954;
Received: 6 January 2010 / Revised: 3 February 2010 / Accepted: 12 February 2010 / Published: 10 March 2010
(This article belongs to the Special Issue Advances in Actuators)
Piezoelectrics have widespread use in today’s sensor and actuator technologies. However, most commercially available piezoelectric materials, e.g., Pb [ZrxTi1-x] O3 (PZT),are comprised of more than 60 weight percent lead (Pb). Dueto 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, Na0.5Bi0.5TiO3, K0.5Bi0.5TiO3, Na0.5K0.5NbO3, 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. View Full-Text
Keywords: ceramics; piezoelectrics; ferroelectrics; electromechanical ceramics; piezoelectrics; ferroelectrics; electromechanical
MDPI and ACS Style

Aksel, E.; Jones, J.L. Advances in Lead-Free Piezoelectric Materials for Sensors and Actuators. Sensors 2010, 10, 1935-1954.

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