Ultrasonic transducer fabricated using lead-free BFO-BTO+Mn piezoelectric 1-3 composite

Y. Chen; K. Mei; C.M. Wong; D.M. Lin; H.L.W. Chan; Jiyan Dai

doi:10.3390/act4020127

Ultrasonic transducer fabricated using lead-free BFO-BTO+Mn piezoelectric 1-3 composite

Y. Chen, K. Mei, C.M. Wong, D.M. Lin, H.L.W. Chan, Jiyan Dai

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

Abstract

Mn-doped 0.7BiFeO3-0.3BaTiO3 (BFO-0.3BTO+Mn 1% mol) lead-free piezoelectric ceramic were fabricated by traditional solid state reaction. The phase structure, microstructure, and ferroelectric properties were investigated. Additionally, lead-free 1–3 composites with 60% volume fraction of BFO-BTO+Mn ceramic were fabricated for ultrasonic transducer applications by a conventional dice-and-fill method. The BFO-BTO+Mn 1-3 composite has a higher electromechanical coupling coefficient (kt = 46.4%) and lower acoustic impedance (Za ~ 18 MRayls) compared with that of the ceramic. Based on this, lead-free piezoelectric ceramic composite, single element ultrasonic transducer with a center frequency of 2.54 MHz has been fabricated and characterized. The single element transducer exhibits good performance with a broad bandwidth of 53%. The insertion loss of the transducer was about 33.5 dB.

Original language	English
Pages (from-to)	127-134
Number of pages	8
Journal	Actuators
Volume	4
Issue number	2
DOIs	https://doi.org/10.3390/act4020127
Publication status	Published - 2015

Keywords

Lead-free ceramic
1-3 composite
Ultrasonic transducer

ASJC Scopus subject areas

Control and Systems Engineering
Control and Optimization

More information

10.3390/act4020127

http://hdl.handle.net/10397/55811

Cite this

@article{e5b20ad9d30546b4b5fbae7e9f1d3f16,

title = "Ultrasonic transducer fabricated using lead-free BFO-BTO+Mn piezoelectric 1-3 composite",

abstract = "Mn-doped 0.7BiFeO3-0.3BaTiO3 (BFO-0.3BTO+Mn 1% mol) lead-free piezoelectric ceramic were fabricated by traditional solid state reaction. The phase structure, microstructure, and ferroelectric properties were investigated. Additionally, lead-free 1–3 composites with 60% volume fraction of BFO-BTO+Mn ceramic were fabricated for ultrasonic transducer applications by a conventional dice-and-fill method. The BFO-BTO+Mn 1-3 composite has a higher electromechanical coupling coefficient (kt = 46.4%) and lower acoustic impedance (Za ~ 18 MRayls) compared with that of the ceramic. Based on this, lead-free piezoelectric ceramic composite, single element ultrasonic transducer with a center frequency of 2.54 MHz has been fabricated and characterized. The single element transducer exhibits good performance with a broad bandwidth of 53%. The insertion loss of the transducer was about 33.5 dB.",

keywords = "Lead-free ceramic, 1-3 composite, Ultrasonic transducer",

author = "Y. Chen and K. Mei and C.M. Wong and D.M. Lin and H.L.W. Chan and Jiyan Dai",

year = "2015",

doi = "10.3390/act4020127",

language = "English",

volume = "4",

pages = "127--134",

journal = "Actuators",

issn = "2076-0825",

publisher = "MDPI AG",

number = "2",

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T1 - Ultrasonic transducer fabricated using lead-free BFO-BTO+Mn piezoelectric 1-3 composite

AU - Chen, Y.

AU - Mei, K.

AU - Wong, C.M.

AU - Lin, D.M.

AU - Chan, H.L.W.

AU - Dai, Jiyan

PY - 2015

Y1 - 2015

N2 - Mn-doped 0.7BiFeO3-0.3BaTiO3 (BFO-0.3BTO+Mn 1% mol) lead-free piezoelectric ceramic were fabricated by traditional solid state reaction. The phase structure, microstructure, and ferroelectric properties were investigated. Additionally, lead-free 1–3 composites with 60% volume fraction of BFO-BTO+Mn ceramic were fabricated for ultrasonic transducer applications by a conventional dice-and-fill method. The BFO-BTO+Mn 1-3 composite has a higher electromechanical coupling coefficient (kt = 46.4%) and lower acoustic impedance (Za ~ 18 MRayls) compared with that of the ceramic. Based on this, lead-free piezoelectric ceramic composite, single element ultrasonic transducer with a center frequency of 2.54 MHz has been fabricated and characterized. The single element transducer exhibits good performance with a broad bandwidth of 53%. The insertion loss of the transducer was about 33.5 dB.

AB - Mn-doped 0.7BiFeO3-0.3BaTiO3 (BFO-0.3BTO+Mn 1% mol) lead-free piezoelectric ceramic were fabricated by traditional solid state reaction. The phase structure, microstructure, and ferroelectric properties were investigated. Additionally, lead-free 1–3 composites with 60% volume fraction of BFO-BTO+Mn ceramic were fabricated for ultrasonic transducer applications by a conventional dice-and-fill method. The BFO-BTO+Mn 1-3 composite has a higher electromechanical coupling coefficient (kt = 46.4%) and lower acoustic impedance (Za ~ 18 MRayls) compared with that of the ceramic. Based on this, lead-free piezoelectric ceramic composite, single element ultrasonic transducer with a center frequency of 2.54 MHz has been fabricated and characterized. The single element transducer exhibits good performance with a broad bandwidth of 53%. The insertion loss of the transducer was about 33.5 dB.

KW - Lead-free ceramic

KW - 1-3 composite

KW - Ultrasonic transducer

U2 - 10.3390/act4020127

DO - 10.3390/act4020127

M3 - Journal article

SN - 2076-0825

VL - 4

SP - 127

EP - 134

JO - Actuators

JF - Actuators

IS - 2

ER -

Ultrasonic transducer fabricated using lead-free BFO-BTO+Mn piezoelectric 1-3 composite

Abstract

Keywords

ASJC Scopus subject areas

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