Theoretical Study on the Piezoelectric Performance of Lead-Free 1–3-Type Composites

Vitaly Yu Topolov; Christopher R. Bowen; Ashura N. Isaeva; Alexander A. Panich

doi:10.1002/pssa.201700548

Theoretical Study on the Piezoelectric Performance of Lead-Free 1–3-Type Composites

Vitaly Yu Topolov, Christopher R. Bowen, Ashura N. Isaeva, Alexander A. Panich

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

The paper is devoted to the analysis of high-performance piezo-composites based on lead-free ferroelectric single crystals. The composite consists of parallelepiped-shaped single-crystal rods which are surrounded by a laminar polymer matrix, and the composite as a whole is described by 1–2–2 connectivity. Such a composite structure promotes high piezoelectric sensitivity and hydrostatic response. Of particular interest are piezoelectric coefficients g*₃₃ and h*₃₃, squared figure of merit d*₃₃ g*₃₃, electromechanical coupling factor k*_t at the thickness-mode oscillation, and hydrostatic parameters g*_h and d*_h g*_h. The influence of the laminar matrix on the aforementioned parameters is studied in a wide volume-fraction range. Examples of maxima and large anisotropy of some effective parameters are discussed for the 1–2–2 composites based on [Li_x(K_1−yNa_y)_1−x](Nb_1−zTa_z)O₃:Mn single crystals. The role of elastic properties of the laminar matrix in achieving large hydrostatic parameters and piezoelectric anisotropy of these composites is emphasised. Their effective parameters are compared to those of composites based on the lead-containing relaxor-ferroelectric single crystals and to specific parameters of poled textured ceramics. Advantages of the studied composites over the relaxor-ferroelectric-based composites and textured ceramics open up new possibilities to apply the 1–3-type lead-free composites as active elements of piezoelectric sensors, hydrophones, energy-harvesting, and transducer devices.

Original language	English
Article number	1700548
Journal	Physica Status Solidi (A)
Volume	215
Issue number	1
Early online date	7 Nov 2017
DOIs	https://doi.org/10.1002/pssa.201700548
Publication status	Published - 1 Jan 2018

Keywords

anisotropy
lead-free components
piezo-active composite
piezoelectric coefficient
sensitivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Electrical and Electronic Engineering
Materials Chemistry

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10.1002/pssa.201700548

topolov_pssa
This is the peer reviewed version of the following article: Topolov, VY, Bowen, CR, Isaeva, AN & Panich, AA 2018, 'Theoretical Study on the Piezoelectric Performance of Lead-Free 1–3-Type Composites' Physica Status Solidi (A), vol 215, no. 1, 1700548, which has been published in final form at: https://doi.org/10.1002/pssa.201700548. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Accepted author manuscript, 13 MB

Cite this

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title = "Theoretical Study on the Piezoelectric Performance of Lead-Free 1–3-Type Composites",

abstract = "The paper is devoted to the analysis of high-performance piezo-composites based on lead-free ferroelectric single crystals. The composite consists of parallelepiped-shaped single-crystal rods which are surrounded by a laminar polymer matrix, and the composite as a whole is described by 1–2–2 connectivity. Such a composite structure promotes high piezoelectric sensitivity and hydrostatic response. Of particular interest are piezoelectric coefficients g*33 and h*33, squared figure of merit d*33 g*33, electromechanical coupling factor k*t at the thickness-mode oscillation, and hydrostatic parameters g*h and d*h g*h. The influence of the laminar matrix on the aforementioned parameters is studied in a wide volume-fraction range. Examples of maxima and large anisotropy of some effective parameters are discussed for the 1–2–2 composites based on [Lix(K1−yNay)1−x](Nb1−zTaz)O3:Mn single crystals. The role of elastic properties of the laminar matrix in achieving large hydrostatic parameters and piezoelectric anisotropy of these composites is emphasised. Their effective parameters are compared to those of composites based on the lead-containing relaxor-ferroelectric single crystals and to specific parameters of poled textured ceramics. Advantages of the studied composites over the relaxor-ferroelectric-based composites and textured ceramics open up new possibilities to apply the 1–3-type lead-free composites as active elements of piezoelectric sensors, hydrophones, energy-harvesting, and transducer devices.",

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Theoretical Study on the Piezoelectric Performance of Lead-Free 1–3-Type Composites

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Chris Bowen

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Theoretical Study on the Piezoelectric Performance of Lead-Free 1–3-Type Composites

Abstract

Keywords

ASJC Scopus subject areas

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Chris Bowen

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