title: High performance relaxor-based ferroelectric single crystals for ultrasonic transducer applications.
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.
authors: The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China. ap.cheny@connect.polyu.hk.
authors: Yan
authors: Y
authors: Chen
authors: Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China. kokokh.lam@polyu.edu.hk.
authors: Kwok-Ho
authors: KH
authors: Lam
authors: Edan Instrument, Inc., Shenzhen 518067, China. dannyzhou82@aliyun.com.
authors: Dan
authors: D
authors: Zhou
authors: Information Materials and Devices Research Center, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 201800, China. yue.qingwen@student.sic.ac.cn.
authors: Qingwen
authors: Q
authors: Yue
authors: Shantou Institute of Ultrasonic Instruments Co., Ltd., Shantou 515041, China. yyx@siui.com.
authors: Yanxiong
authors: Y
authors: Yu
authors: Shantou Institute of Ultrasonic Instruments Co., Ltd., Shantou 515041, China. wjc@siui.com.
authors: Jinchuan
authors: J
authors: Wu
authors: 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. wb.qiu@siat.ac.cn.
authors: Weibao
authors: W
authors: Qiu
authors: The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China. lei.sun@polyu.edu.hk.
authors: Lei
authors: L
authors: Sun
authors: Shenzhen Optomechatronics Key Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China. zhangc@tsinghua-sz.org.
authors: Chao
authors: C
authors: Zhang
authors: Information Materials and Devices Research Center, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 201800, China. hsluo@mail.sic.ac.cn.
authors: Haosu
authors: H
authors: Luo
authors: The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China. apahlcha@polyu.edu.hk.
authors: Helen L W
authors: HL
authors: Chan
authors: The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China. jiyan.dai@polyu.edu.hk.
authors: Jiyan
authors: J
authors: Dai
mesh_terms: D003460:Crystallization / Q000379:methods; D004867:Equipment Design / Q000379:methods; D019544:Equipment Failure Analysis / Q000379:methods; D006358:Hot Temperature; D009556:Niobium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D014159:Transducers; D044366:Transition Temperature; D014465:Ultrasonics / Q000379:methods*
chemical_list: D010087:Oxides; D009556:Niobium