Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1521621 | Materials Chemistry and Physics | 2015 | 9 Pages |
Abstract
This paper demonstrates the influence of the mutual orientation of the poling direction of single-crystal and ceramic components on the properties of 1-0-3 composites containing two ferroelectric components and a piezo-passive polymer. Effective properties to be considered are hydrostatic piezoelectric performance, anisotropy of squared figures of merit and electromechanical coupling factors. We demonstrate that the elastic and piezoelectric anisotropy of the 0-3 connectivity ferroelectric ceramic/polymer matrix with prolate inclusions leads to large hydrostatic piezoelectric coefficients (dhâ and ghâ) and squared figure of merit (dhâghâ) in a 1-0-3 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 single crystal/(Pb1-xCax)TiO3 ceramic/araldite composite with x = 0.20-0.25. In this type of composite values of maxghâ â¼102 mV m/N and max(dhâghâ) â¼10â11 Paâ1 are achieved at specific volume-fraction and rotation-angle ranges due to a new orientation effect in the presence of a highly anisotropic 0-3 matrix. Such composites are of interest for sensor, actuator and energy-harvesting applications.
Related Topics
Physical Sciences and Engineering
Materials Science
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Authors
V.Yu. Topolov, C.R. Bowen, P. Bisegna, A.V. Krivoruchko,