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High Electromechanical Coupling Piezoelectrics - How High Energy Conversion Rate is Possible

Published online by Cambridge University Press:  10 February 2011

Kenji Uchino
Kenji Uchino*
Affiliation:
International Center for Actuators and Transducers, Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
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Abstract

A new category of piezoelectric ceramics with very high electromechanical coupling was discovered in a lead zinc niobate:lead titanate solid solution in a single crystal form. The maximum coupling factor k33 reaches 95%, which corresponds to the energy conversion rate twice as high as the conventional lead zirconate titanate ceramics. This paper reviews the previous studies on superior piezoelectricity in relaxor ferroelectric: lead titanate solid solutions and on the possible mechanisms of this high electromechanical coupling.

Keywords

electromechanical couplingpiezoelectricrelaxor ferroelectricdomain motion
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 459: Symposium Y – Materials for Smart Systems II , 1996 , 3
Copyright
Copyright © Materials Research Society 1997

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References

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