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Sensors 2014, 14(8), 13730-13758; https://doi.org/10.3390/s140813730

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

1
The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
2
Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
3
Edan Instrument, Inc., Shenzhen 518067, China
4
Information Materials and Devices Research Center, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 201800, China
5
Shantou Institute of Ultrasonic Instruments Co., Ltd., Shantou 515041, China
6
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
7
Shenzhen Optomechatronics Key Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
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]

Abstract

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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