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Issue 32, 2016
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Advanced composites based on relaxor-ferroelectric single crystals: from electromechanical coupling to energy-harvesting applications

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Abstract

Domain-engineered relaxor-ferroelectric single crystals with compositions near the morphotropic phase boundary are considered as a key component for modern high-performance piezo-active composites. The advantages of using the relaxor-ferroelectric single crystals of solid solutions of (1 − x)Pb(Mg1/3Nb2/3)O3xPbTiO3 and (1 − y)Pb(Zn1/3Nb2/3)O3yPbTiO3 in piezo-active composites of 2–2 and 1–3 configurations are discussed by taking into account the complex relationships between the outstanding properties of the components and the effective parameters of the composite structure as a whole. Examples of their high piezoelectric activity, strong electromechanical coupling, large piezoelectric anisotropy, and large hydrostatic parameters of the composites demonstrate how the relaxor-ferroelectric single-crystal component improves the effective parameters and promotes the formation of non-monotonic volume-fraction dependences of particular effective parameters that are of interest for a variety of piezotechnical applications, such as transducers, sensors, hydrophones, and energy-harvesting devices.

Graphical abstract: Advanced composites based on relaxor-ferroelectric single crystals: from electromechanical coupling to energy-harvesting applications

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Supplementary files

Article information


Submitted
11 Apr 2016
Accepted
07 Jun 2016
First published
07 Jun 2016

CrystEngComm, 2016,18, 5986-6001
Article type
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Advanced composites based on relaxor-ferroelectric single crystals: from electromechanical coupling to energy-harvesting applications

C. R. Bowen, V. Yu. Topolov, A. N. Isaeva and P. Bisegna, CrystEngComm, 2016, 18, 5986
DOI: 10.1039/C6CE00825A

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