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http://hdl.handle.net/10397/7488
Title: | High performance relaxor-based ferroelectric single crystals for ultrasonic transducer applications | Authors: | Chen, Y Lam, KH Zhou, D Yue, Q Yu, Y Wu, J Qiu, W Sun, L Zhang, C Luo, H Chan, HLW Dai, J |
Issue Date: | 29-Jul-2014 | Source: | Sensors, 29 July 2014, v. 14, no. 8, p. 13730-13758 | Abstract: | Relaxor-based ferroelectric single crystals Pb(Mg₁/₃ Nb₂/₃ )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(Mg₁/₃ Nb₂/₃)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[sub rt], and tetragonal to cubic T[sub c]) 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. | Keywords: | PMN-PT PIN-PMN-PT Single crystals Composites Ultrasonic transducers |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Sensors | EISSN: | 1424-8220 | DOI: | 10.3390/s140813730 | Rights: | © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). The following publication "Chen, Y., Lam, K. -., Zhou, D., Yue, Q., Yu, Y., Wu, J., . . . Dai, J. (2014). High performance relaxor-based ferroelectric single crystals for ultrasonic transducer applications. Sensors (Switzerland), 14(8), 13730-13758." is available at http://www.dx.doi.org/10.3390/s140813730 |
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