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Sensors 2014, 14(8), 13730-13758;

High Performance Relaxor-Based Ferroelectric Single Crystals for Ultrasonic Transducer Applications

The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
Edan Instrument, Inc., Shenzhen 518067, China
Information Materials and Devices Research Center, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 201800, China
Shantou Institute of Ultrasonic Instruments Co., Ltd., Shantou 515041, China
Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
Shenzhen Optomechatronics Key Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Received: 11 June 2014 / Revised: 18 July 2014 / Accepted: 18 July 2014 / Published: 29 July 2014
Full-Text   |   PDF [1351 KB, uploaded 31 July 2014]


Relaxor-based ferroelectric single crystals Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) have drawn much attention in the ferroelectric field because of their excellent piezoelectric properties and high electromechanical coupling coefficients (d33~2000 pC/N, kt~60%) near the morphotropic phase boundary (MPB). Ternary Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) single crystals also possess outstanding performance comparable with PMN-PT single crystals, but have higher phase transition temperatures (rhombohedral to tetragonal Trt, and tetragonal to cubic Tc) and larger coercive field Ec. Therefore, these relaxor-based single crystals have been extensively employed for ultrasonic transducer applications. In this paper, an overview of our work and perspectives on using PMN-PT and PIN-PMN-PT single crystals for ultrasonic transducer applications is presented. Various types of single-element ultrasonic transducers, including endoscopic transducers, intravascular transducers, high-frequency and high-temperature transducers fabricated using the PMN-PT and PIN-PMN-PT crystals and their 2-2 and 1-3 composites are reported. Besides, the fabrication and characterization of the array transducers, such as phased array, cylindrical shaped linear array, high-temperature linear array, radial endoscopic array, and annular array, are also addressed. View Full-Text
Keywords: PMN-PT; PIN-PMN-PT; single crystals; composites; ultrasonic transducers PMN-PT; PIN-PMN-PT; single crystals; composites; ultrasonic transducers
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Chen, Y.; Lam, K.-H.; Zhou, D.; Yue, Q.; Yu, Y.; Wu, J.; Qiu, W.; Sun, L.; Zhang, C.; Luo, H.; Chan, H.L.W.; Dai, J. High Performance Relaxor-Based Ferroelectric Single Crystals for Ultrasonic Transducer Applications. Sensors 2014, 14, 13730-13758.

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