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

Sensors

Yan Chen⁴  Kwok-Ho Lam¹  Dan Zhou⁵  Qingwen Yue²  Yanxiong Yu⁶  Jinchuan Wu⁶  Weibao Qiu³  Lei Sun⁴  Chao Zhang⁷  Haosu Luo²  Helen L. W. Chan⁴ 

[1] Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China; E-Mail:;Information Materials and Devices Research Center, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 201800, China; E-Mails:;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; E-Mail:;The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China; E-Mails:;Edan Instrument, Inc., Shenzhen 518067, China; E-Mails:;Shantou Institute of Ultrasonic Instruments Co., Ltd., Shantou 515041, China; E-Mails:;Shenzhen Optomechatronics Key Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China; E-Mail:

关键词: PMN-PT;    PIN-PMN-PT;    single crystals;    composites;    ultrasonic transducers;   

DOI  :  10.3390/s140813730

来源: mdpi

【 摘 要 】

Relaxor-based ferroelectric single crystals Pb(Mg_1/3Nb_2/3)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(In_1/2Nb_1/2)O₃-Pb(Mg_1/3Nb_2/3)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 T_rt, and tetragonal to cubic T_c) and larger coercive field E_c. 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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.