Dielectric and piezoelectric properties of 0.7 Pb(Mg1/3Nb2/3)O3-0.3 PbTiO3 single crystal poled using alternating current
Dielectric and piezoelectric properties of 0.7 Pb(Mg1/3Nb2/3)O3-0.3 PbTiO3 single crystal poled using alternating current
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DOI：
10.1080/21663831.2018.1498812
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发表时间：
2018-01-01
影响因子：
8.3
通讯作者：
Jiang, Xiaoning
中科院分区：
文献类型：
--
作者：
Chang, Wei-Yi;Chung, Ching-Chang;Jiang, Xiaoning
采用交流电场极化法对0.7Pb（Mg 1/3 Nb 2/3）O3 -0.3PbTiO（3）（PMN-30%PT）单晶样品进行了极化。与传统的极化方法相比，压电系数、自由和箝位介电常数均提高了21%以上。X射线衍射结果表明ACP样品中存在单斜相（M-A），压电响应力显微镜（PFM）结果进一步描述了更精细的工程畴结构。ACP样品在去极化过程中也显示出独特的相变序列。我们的工作为提高PMN-PT单晶的压电性能提供了一种新的畴工程方法。[图表].IMPACT STAMENT-PT单晶的压电和介电性能可以通过采用新的交流极化方法显著增强，这归因于包含前所未有的畴壁密度的独特异质畴结构。
In this paper, 0.7Pb(Mg1/3Nb2/3)O-3-0.3PbTiO(3)(PMN-30%PT) single crystal samples were poled using an alternating current (electric field) poling (ACP) method. Compared to the traditional poling method, the piezoelectric coefficient, free and clamped dielectric constants were improved more than 21%. X-ray diffraction result suggests the existence of monoclinic phase (M-A) in ACP samples and piezoresponse force microscopy (PFM) result further depicts the finer engineered domain structures. The ACP sample also showed the unique phase transition sequences during the depoling process. Our work could provide a novel domain engineered method to enhance piezoelectric properties of PMN-PT single crystal.[GRAPHICS].IMPACT STATEMENTPiezoelectric and dielectric properties of relaxor-PT single crystals can be significantly enhanced by employing the new alternating current poling method, attributing to the unique heterogenous domain structure containing unprecedented domain wall density.