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Piezoelectric Single Crystals of Pb(Mg1/3Nb2/3)O3-PbTiO3 and their Applications in Medical Ultrasonic Transducers

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3 Author(s)
Dan Zhou ; Shanghai Inst. of Ceramics, Chinese Acad. of Sci., Shanghai ; Chen, Jing ; Haosu Luo

The (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) single crystals were investigated for various applications in medical ultrasonic transducers. PMN-PT monolithic transducer was fabricated with bandwidth at -3 dB enhanced by 34% and sensitivity enhanced by 4 dB, compared with traditional PZT transducer. The PMN-PT phased array transducer fabricated is also excellent. 1-3 piezoelectric composites using PMN-PT exhibit high thickness mode coupling factor (kt = 90.1%), and relatively low acoustic impedance (Z = 19.49 MRayls).The research work has been done indicates PMN-PT single crystal a promising application in medical ultrasonic transducers.

Published in:

BioMedical Engineering and Informatics, 2008. BMEI 2008. International Conference on  (Volume:2 )

Date of Conference:

27-30 May 2008