Abstract
A composite containing parallel-connected layers of a porous ferroelectric PZT-type ceramic and porous polymer is manufactured, and effective piezoelectric properties and hydrostatic parameters are first studied for 2–0–2–0 connectivity. An influence of air pores in different layers on the longitudinal (d33∗) and hydrostatic (dh∗ and gh∗) piezoelectric coefficients, and squared hydrostatic figure of merit dh∗gh∗ of the composite is analysed. Large values of d33∗ ≈ 400–600 pC/N, dh∗ ≈ 300–500 pC/N, gh∗ ≈ 100–150 mV m/N, and dh∗gh∗ ≈ (30–60)·10-12 Pa−1 suggest that this material has no analogs among ceramic-based composites and is suitable for piezoelectric sensor and hydroacoustic applications.
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