Abstract The paper reports results on the large hydrostatic parameters of novel three-component 2–2-type composites based on [011]-poled relaxor-ferroelectric single crystals. The role of the rotation of the main crystallographic axes X and Y in forming the considerable hydrostatic piezoelectric response is studied. The composite consists of the single-crystal and 0–3 corundum ceramic/polyethylene layers that are regularly arranged along the non-polar axis. 0.72Pb(Mg1/3Nb2/3)O3–0.28PbTiO3 and 0.93Pb(Zn1/3Nb2/3)O3–0.07PbTiO3 single crystals poled along [011] of the perovskite unit cell are considered as main piezoelectric components of the composites with 2–0–2 connectivity. Links between the hydrostatic parameters (piezoelectric coefficients and squared figure of merit and electromechanical coupling factor ) are analysed by taking into account specifics of the microgeometry and elastic anisotropy of the 0–3 layer. Due to the large values of the aforementioned hydrostatic parameters, the studied 2–0–2 composites are of interest for hydroacoustic and piezoelectric energy-harvesting applications.

中文翻译：

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压电活性 2-0-2 复合材料中静水参数之间的取向效应和联系

摘要 本文报告了基于 [011] 极化弛豫铁电单晶的新型三组分 2-2 型复合材料的大流体静力学参数的结果。研究了主要晶轴 X 和 Y 的旋转在形成相当大的静压压电响应中的作用。该复合材料由沿非极性轴规则排列的单晶和 0-3 层刚玉陶瓷/聚乙烯层组成。0.72Pb(Mg1/3Nb2/3)O3–0.28PbTiO3 和 0.93Pb(Zn1/3Nb2/3)O3–0.07PbTiO3 单晶沿钙钛矿晶胞的 [011] 极化被认为是复合材料的主要压电元件，具有 2 –0–2 连通性。通过考虑 0-3 层的微观几何形状和弹性各向异性的细节，分析了流体静力学参数（压电系数和品质因数的平方以及机电耦合因子）之间的联系。由于上述流体静力学参数的较大值，所研究的 2-0-2 复合材料对水声和压电能量收集应用很感兴趣。