Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30378
Title: High-frequency ultrasonic transducer fabricated with lead-free piezoelectric single crystal
Authors: Chen, Y
Jiang, XP
Luo, HS
Dai, JY 
Chan, HL 
Issue Date: 2010
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2010, v. 57, no. 11, p. 2601-2604 How to cite?
Journal: IEEE transactions on ultrasonics, ferroelectrics, and frequency control 
Abstract: High-frequency (25 MHz) ultrasonic transducers with Na0.5Bi0.5TiO3-BaTiO3 (NBT-BT) lead-free piezoelectric single crystal as the active elements are fabricated and characterized. The impedance measurement reveals that the poled [001]-oriented NBT-BT single crystal exhibits a high thickness electromechanical coefficient kt of 0.52 and a low clamped dielectric constant of 80. The -6-dB bandwidth of the transducer is 46.16% and the insertion loss at the center frequency is -31.89 dB. The good performance of the transducer indicates that the NBT-BT single crystal would be a promising lead-free material for ultrasonic transducer applications.
URI: http://hdl.handle.net/10397/30378
ISSN: 0885-3010
EISSN: 1525-8955
DOI: 10.1109/TUFFC.2010.1727
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