New orientation effect in piezo-active 1-3-type composites

摘要: This paper demonstrates the influence of mutual orientation poling direction single-crystal and ceramic components on properties 1–0–3 composites containing two ferroelectric a piezo-passive polymer. Effective to be considered are hydrostatic piezoelectric performance, anisotropy squared figures merit electromechanical coupling factors. We demonstrate that elastic 0–3 connectivity ceramic/polymer matrix with prolate inclusions leads large coefficients (dh∗ gh∗) figure (dh∗gh∗) in 0.67Pb(Mg1/3Nb2/3)O3–0.33PbTiO3 single crystal/(Pb1–xCax)TiO3 ceramic/araldite composite x = 0.20–0.25. In this type values maxgh∗ ∼102 mV m/N max(dh∗gh∗) ∼10−11 Pa−1 achieved at specific volume-fraction rotation-angle ranges due new effect presence highly anisotropic matrix. Such interest for sensor, actuator energy-harvesting applications.