Piezoelectric sensitivity and hydrostatic response of novel lead-free 2–0–2 composites with two single-crystal components

The present paper is concerned with the piezoelectric properties and related parameters of the 2-2-type parallel-connected composites wherein rotations of the main crystallographic axes in ferroelectric single-crystal components are analysed. The composite consists of layers of two types that are regularly arranged along the non-polar axis. The Type I layer is a single-domain 0.63Pb(Mg1/3Nb2/3)O3-0.37PbTiO3 single crystal (either tetragonal in Composite I or orthorhombic in Composite II). The Type II layer is a Li2B4O7 single crystal / polyethylene medium with 0-3 connectivity. The composite as a whole is characterised by 2-0-2 connectivity, and the following parameters of the composite are studied by taking into account the polarisation orientation effect in the Type I layer and the microgeometry of the composite in the Type II layer: piezoelectric coefficients * 3 j d and * 3 j g and their hydrostatic analogs * h d and * h g , hydrostatic squared figure of merit * h d * h g , and piezoelectric anisotropy factors * 33 d / * 32 d and * 33 d / * 32 d . It is shown that large values of the studied piezoelectric coefficients, hydrostatic parameters and anisotropy factors make Composite II more preferable in comparison to Composite I for hydroacoustic, piezoelectric sensor and energy-harvesting applications.

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Orientation effects and links between hydrostatic parameters in piezo-active 2–0–2 composites

Topolov

Krivoruchko

Isaeva

et al. 2020

Ferroelectrics

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Piezoelectric sensitivity and hydrostatic response of novel lead-free 2–0–2 composites with two single-crystal components

Cited by 7 publications

References 31 publications

Longitudinal piezoelectric effect and hydrostatic response in novel laminar composites based on ferroelectric ceramics

Longitudinal piezoelectric effect and hydrostatic response in novel laminar composites based on ferroelectric ceramics

Domain orientations and piezoelectric properties in novel 2–2-type composites with two single-crystal components

Orientation effects and links between hydrostatic parameters in piezo-active 2–0–2 composites

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