High piezoelectric sensitivity and related parameters of a novel lead-free 1–0–3 composite

IF 1.3 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Ferroelectrics Letters Section Pub Date : 2017-11-02 DOI:10.1080/07315171.2017.1397461

V. Topolov, A. Isaeva

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引用次数: 4

Abstract

ABSTRACT A piezoelectric performance of a novel 1–0–3 composite based on lead-free single crystals with 4mm symmetry is first analysed. Ferroelectric domain-engineered alkali niobate-tantalate based single crystals provide large values of the piezoelectric coefficients g*3j and g*h, squared figures of merit d*33 g*33 and d*h g*h, and a 0–3 matrix promotes a large piezoelectric anisotropy in specific volume-fraction ranges. An aspect-ratio effect concerned with spheroidal inclusions of a piezoelectric Li2B4O7 single crystal in a polymer medium is studied to show the considerable influence of these inclusions on the effective parameters of the composite. Values of g*33∼ 103 mV·m / N, g*h∼ (102–103) mV·m / N, d*33 g*33∼ 10−10 Pa−1, and d*h g*h∼ (10−11–10−10) Pa−1, and the large anisotropy of the piezoelectric coefficients d*3j and electromechanical coupling factors k*3j are achieved in the 1–0–3 composite based on a [001]-poled [Lix(K1-yNay)1-x](Nb1-zTaz)O3:Mn single crystal and make this composite suitable for piezoelectric sensor, energy-harvesting and hydroacoustic applications.

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新型无铅1-0-3复合材料的高压电灵敏度及相关参数

摘要:首先分析了一种新型的1-0-3无铅单晶复合材料的压电性能。基于铁电畴工程的铌钽碱单晶具有较大的压电系数g*3j和g*h，优点的平方值d*33 g*33和d*h g*h，并且0-3矩阵在特定体积分数范围内具有较大的压电各向异性。研究了压电Li2B4O7单晶在聚合物介质中球形夹杂物的纵横比效应，表明这些夹杂物对复合材料的有效参数有相当大的影响。基于[001]-极化[Lix(K1-yNay)1-x](Nb1-zTaz)O3:Mn单晶制备的1- 0 - 3复合材料具有g*33 ~ 103 mV·m / N、g*h ~ (102-103) mV·m / N、d*33 g*33 ~ 10−10 Pa−1和d*h g*h ~(10−11-10−10)Pa−1，且压电系数d*3j和机电耦合系数k*3j具有较大的各向异性，适用于压电传感器、能量收集和水声应用。

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来源期刊

Ferroelectrics Letters Section 物理-物理：凝聚态物理

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

4.8 months

期刊介绍： Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.