Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32833
Title: High-frequency ultrasonic transducer based on lead-free BSZT piezoceramics
Authors: Lee, STF
Lam, KH
Zhang, XM 
Chan, HLW 
Keywords: High-frequency transducer
Lead-free
Issue Date: 2011
Publisher: Elsevier
Source: Ultrasonics, 2011, v. 51, no. 7, p. 811-814 How to cite?
Journal: Ultrasonics 
Abstract: This paper describes the fabrication and evaluation of a high-frequency (40 MHz) transducer based on lead-free piezoceramics for ultrasonic imaging. The transducer with an aperture size of 0.9 mm has been fabricated using barium strontium zirconate titanate ((Ba0.95Sr0.05)(Zr 0.05Ti0.95)O3, abbreviated as BSZT) ceramics. The lead-free BSZT has a piezoelectric d33 coefficient of 300 pC/N and an electromechanical coupling factor kt of 0.45. High-frequency ultrasound transducers were fabricated and a bandwidth of 76.4% has been achieved with an insertion loss of -26 dB. Applications in high resolution biological and medical imaging could be possible with this lead-free material.
URI: http://hdl.handle.net/10397/32833
ISSN: 0041-624X
EISSN: 1874-9968
DOI: 10.1016/j.ultras.2011.03.009
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