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Development and Electromechanical Properties of Multimaterial Piezoelectric and Electrostrictive PMN-PT Monomorph Actuators

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Abstract

Monolithic multimaterial monomorphs, comprised of varying ratios of piezoelectric 0.65Pb(Mg1/3 Nb2/3)O3-0.35PbTiO3 to electrostrictive 0.90Pb(Mg1/3Nb2/3)O3-0.10PbTiO3, have been co-fired at 1150∘C. The relative permittivity, displacement, and polarization hysteresis were investigated for varying ratios of piezoelectric to electrostrictive material. The permittivity of the 1:1 multimaterial monomorphs followed the dielectric mixing laws, showing a dielectric constant of 5,500 at room temperature. The P-E hysteresis loop of the 1:1 sample exhibited a maximum and remnant polarization slightly less than the piezoelectric PMN-PT 65/35, but higher than the electrostrictive PMN-PT 90/10. Displacement was found to be higher for the 3:1 monolithic monomorph actuators, reaching 76 μ m at 6 kV/cm. The results indicate that by minimizing the electrostrictive layer thickness the tip displacement can be substantially increased while maintaining a lower hysteresis than that of the purely piezoelectric counterpart.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Rutgers-The State University of New Jersey, Piscataway, New Jersey, 08854

    A. Hall, M. Allahverdi, E. K. Akdogan & A. Safari

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  1. A. Hall
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  2. M. Allahverdi
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  3. E. K. Akdogan
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  4. A. Safari
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Correspondence to A. Safari.

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Hall, A., Allahverdi, M., Akdogan, E.K. et al. Development and Electromechanical Properties of Multimaterial Piezoelectric and Electrostrictive PMN-PT Monomorph Actuators. J Electroceram 15, 143–150 (2005). https://doi.org/10.1007/s10832-005-2191-5

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  • DOI: https://doi.org/10.1007/s10832-005-2191-5

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