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

Chen, Y. et al. (2014) High Performance Relaxor-Based Ferroelectric Single Crystals for Ultrasonic Transducer Applications. Sensors, 14(8), pp. 13730-13758. (doi: 10.3390/s140813730) (PMID:25076222)

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.

• Item Type: Articles
• Additional Information: This research was supported by the National key Basic Research Program of China (973 Program) under Grant No. 2013CB632900. Financial support from The Hong Kong Polytechnic University strategic plan (No: 1-ZV9B & 1-ZVCG), Shenzhen Government research grant of high-frequency medical ultrasound imaging technology R & D and industrialization (No: ZD201111070101A). National Science Foundation Grants (NSFC Grant Nos. 61302038).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Lam, Dr Koko
• Authors: 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., and Dai, J.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Sensors
• Publisher: MDPI
• ISSN: 1424-8220
• ISSN (Online): 1424-8220