High-frequency ultrasonic transducer based on lead-free BSZT piezoceramics

S. T F Lee; Kwok Ho Lam; Xuming Zhang; H. L W Chan

doi:10.1016/j.ultras.2011.03.009

High-frequency ultrasonic transducer based on lead-free BSZT piezoceramics

S. T F Lee, Kwok Ho Lam, Xuming Zhang, H. L W Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

41 Citations (Scopus)

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)(Zr0.05Ti0.95)O3, abbreviated as BSZT) ceramics. The lead-free BSZT has a piezoelectric d33coefficient of 300 pC/N and an electromechanical coupling factor ktof 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.

Original language	English
Pages (from-to)	811-814
Number of pages	4
Journal	Ultrasonics
Volume	51
Issue number	7
DOIs	https://doi.org/10.1016/j.ultras.2011.03.009
Publication status	Published - 1 Oct 2011

Keywords

High-frequency transducer
Lead-free

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1016/j.ultras.2011.03.009

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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)(Zr0.05Ti0.95)O3, abbreviated as BSZT) ceramics. The lead-free BSZT has a piezoelectric d33coefficient of 300 pC/N and an electromechanical coupling factor ktof 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.",

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AU - Lee, S. T F

AU - Lam, Kwok Ho

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High-frequency ultrasonic transducer based on lead-free BSZT piezoceramics

Abstract

Keywords

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