Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/381
Title: Single crystal PMN-0.33PT/epoxy 1-3 composites for ultrasonic transducer applications
Authors: Cheng, Kei-chun
Chan, Helen L. W.
Choy, Chung-loong
Yin, Qingrui
Luo, Haosu
Yin, Zhiwen
Subjects: Ultrasonic transducers
Piezoelectric materials
Composite materials
Issue Date: Sep-2003
Publisher: IEEE
Source: IEEE transactions on ultrasonics, ferroelectrics, and frequency control, Sept. 2003, v. 50, no. 9, p.1177-1183
Abstract: Lead magnesium niobate-lead titanate 0.67Pb (Mg[sub ⅓]Nb[sub ⅔])O₃-0.33PbTiO₃ (PMN-0.33PT, abbreviated as PMN-PT) single crystals were used to fabricate PMN-PT/epoxy 1-3 composites with different volume fractions of PMN-PT ranging from 0.4 to 0.8. The electromechanical properties of the 1-3 composites were determined by the resonance technique. Theoretical modeling of the 1-3 composites matched quite well with the measured material properties. It was demonstrated that the thickness electromechanical coupling coefficients of the composites could reach as high as 0.8. A 2.4 MHz plane ultrasonic transducer was fabricated using a PMN-PT/epoxy 1-3 composite with 0.37 volume fraction of PMN-PT. It shows a -6 dB bandwidth of ∼61% and an insertion loss of -14 dB.
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Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/381
DOI: 10.1109/TUFFC.2003.1235328
ISSN: 0885-3010
Appears in Collections:AP Journal/Magazine Articles

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