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首页> 外文期刊>Smart Materials & Structures >Polarization orientation effect and combination of electromechanical properties in advanced O.67Pb(Mg_(1/3)Nb_(2/3))0_3-O.33PbTiO3 single crystal/polymer composites with 2-2 connectivity
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Polarization orientation effect and combination of electromechanical properties in advanced O.67Pb(Mg_(1/3)Nb_(2/3))0_3-O.33PbTiO3 single crystal/polymer composites with 2-2 connectivity

机译：具有2-2连接性的高级O.67Pb（Mg_（1/3）Nb_（2/3））0_3-O.33PbTiO3单晶/聚合物复合材料的极化取向效应和机电性能组合

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摘要

A comparative study on the effective piezoelectric properties and hydrostatic piezoelectric response is first carried out for advanced 2-2 composites based on single crystals of relaxor-ferroelectric solid solutions. Different orientations of domains and different poling directions of components are taken into consideration in the analysis of the effective longitudinal piezoelectric coefficients d_(33)~*, e_(33)~*, g_(33)~*-and hydrostatic piezoelectric coefficients d_h~*, e_h~* and g_h~*. The important role of the polarization orientation effect and the effect of combination of the electromechanical properties in attaining the large effective parameters is shown for the parallel-connected 2-2 single-domain 0.67Pb(Mg_(1/3)Nb_2/3)0_3-0.33PbTiO_3/polyvinylidene fluoride composite. In particular, near extremum points of the effective parameters, this composite is characterized by the piezoelectric coefficients g_(33)~* 500 mV m N-1, |d+h~| 400 pC N~(-1) , |e_h~*| 40 C m~(-2), and g_h~* (400) mV m N~(-1). Three piezo-sums are first found to describe major contributions of the piezoelectric coefficients d, e7i and g_(ij)~* to d_h~*, e_h~* and g*, respectively, in the vicinity of absolute maxima (minima) of the aforementioned hydrostatic parameters. Advantages concerned with the presence of the single crystal (either single-domain or polydomain) in the studied 2-2 composites are discussed in connection with their piezoelectric activity, sensitivity and hydrostatic response.
机译：首先对基于弛豫铁电固溶体单晶的先进2-2复合材料进行了有效压电性能和静水压电响应的比较研究。在分析有效纵向压电系数d_（33）〜*，e_（33）〜*，g_（33）〜*-和静水压电系数d_h〜时，应考虑不同方向的区域取向和不同的组件极化方向。 *，e_h〜*和g_h〜*。对于并联的2-2单畴0.67Pb（Mg_（1/3）Nb_2 / 3）0_3，显示了极化取向效应和机电性能组合对获得较大有效参数的重要作用。 -0.33PbTiO_3 /聚偏二氟乙烯复合材料。特别地，在有效参数的极值点附近，该复合材料的特征在于压电系数g_（33）〜* 500 mV m N-1，| d + h〜|。 400 pC N〜（-1），| e_h〜* | 40 C m〜（-2）和g_h〜*（400）mV m N〜（-1）。首先发现三个压电和，分别描述了压电系数d，e7i和g_（ij）〜*对d_h〜*，e_h〜*和g *的主要贡献，它们的绝对最大值附近。前述静水力参数。结合压电活性，灵敏度和静水压响应，讨论了在研究的2-2复合材料中存在单晶（单畴或多畴）的优点。

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