Optimizing the piezoelectric vibration of Pb(Mg1/3Nb2/3)O3-0.25PbTiO3 single crystal by alternating current polarization for ultrasonic transducer

被引：42

作者：

Xu, Jialin ^{[1
,2
]}

Zhang, Zhang ^{[1
,2
]}

Liu, Sixing ^{[1
,2
]}

Xiao, Junjie ^{[1
,3
]}

Yue, Qingwen ^{[4
]}

Deng, Hao ^{[1
]}

Wang, Xian ^{[1
]}

Lin, Di ^{[1
]}

Wang, Feifei ^{[3
]}

Zhang, Rui ^{[5
]}

Li, Xiaobing ^{[6
]}

Luo, Haosu ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Shanghai Normal Univ, Key Lab Optoelect Mat & Device, Shanghai 200234, Peoples R China

[4] Acoust Life Sci Co Ltd, Shanghai 201203, Peoples R China

[5] Harbin Inst Technol, Sch Instrument Sci & Engn, Harbin 150001, Peoples R China

[6] Univ Shanghai Sci & Technol, Sch Med Instrument & Food Engn, Shanghai 200093, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2020年 / 116卷 / 20期

基金：

中国国家自然科学基金;

关键词：

DESIGN;

D O I：

10.1063/5.0008148

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Alternate current poling (ACP) is an effective method to enhance the piezoelectric performance of Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) (PMN-xPT) single crystals dramatically. For their application in piezoelectric transducers for medical imaging, the beam mode vibration of PMN-0.25PT single crystal resonators after ACP was investigated by combining experimental impedance measurements and finite element simulation. The complete material coefficients of PMN-0.25PT single crystals were obtained by using pulse-echo ultrasound and inverse impedance spectroscopy. Compared to traditional direct current poling (DCP), the beam mode electromechanical coupling coefficient (k(33)') of PMN-0.25PT for ACP reaches up to 89.1% from 84.5% of DCP. As the attribution of the special periodic stripe domain structure (109 degrees domain), the lateral vibration will be suppressed effectively in the array transducer. This indicates that AC-poled PMN-0.25PT single crystals can be an efficient strategy to obtain higher sensitivity and a larger bandwidth in ultrasonic transducers.

引用

页数：5

共 28 条

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[Anonymous], 2017, 1859IEEE

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