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Title: Broad-band and high-temperature ultrasonic transducer fabricated using a Pb(In[sub ½]Nb[sub ½])-Pb(Mg[sub ⅓]Nb[sub ⅔])-PbTiO₃ single crystal/epoxy 1–3 composite
Authors: Zhou, D
Cheung, KF
Lam, KH
Chen, Y 
Chiu, YC
Dai, J 
Chan, HLW 
Luo, H
Issue Date: May-2011
Source: Review of scientific instruments, May 2011, v. 82, no. 5, 055110, p. 1-7
Abstract: In this paper, 1–3 composites based on Pb(In[sub ½]Nb[sub ½])-Pb(Mg[sub ⅓]Nb[sub ⅔])-PbTiO₃ (PIMNT) single crystal and high-temperature epoxy were fabricated with various volume fractions of PIMNT single crystal ranging from 0.4 to 0.9. The electrical properties were studied as functions of PIMNT volume fraction and temperature, and it revealed that the nature of ultrahigh electromechanical coupling coefficient (0.82–0.93) and low acoustic impedance (17–19 MRayl) of the composites can be retained within a wide temperature range from room temperature to 185 °C. Single element ultrasonic transducer using the PIMNT 1–3 composite was fabricated and characterized as a function of temperature. It was found that the transducer can still work normally at high temperatures, such as 165 °C, possessing a bandwidth of 95% and insertion loss of –27 dB.
Keywords: Acoustic impedance
Electromechanical coupling
Fabrication
Single crystals
Titration
Transducers
Ultrasonic equipment
Ultrasonic measurement
Ultrasonic transducers
Ultrasonic waves
Ultrasonics
Publisher: American Institute of Physics
Journal: Review of scientific instruments 
ISSN: 0034-6748
EISSN: 1089-7623
DOI: 10.1063/1.3583746
Rights: © 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in D. Zhou et al., Rev. Sci. Instrum. 82, 055110 (2011) and may be found at http://rsi.aip.org/resource/1/rsinak/v82/i5/p055110_s1.
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