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Q factor of lithium niobate piezoelectric transducers at high excitation levels

  • Acoustic, Acoustoelectronics
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Abstract

The variations of the electroacoustic parameters (Q factor, electromechanical coupling coefficient, and capacitance) of lithium niobate piezoelectric transducers with increasing high-frequency excitation voltage are studied experimentally. The relative acoustic strain is found to reach a maximum of about 10−4 in the frequency range from 2 to 3 MHz. The Q factor of the transducers may increase by 100% in the range of acoustic strains studied. This increase is accompanied with acoustic emission. The reason for this effect is the block structure of the lithium niobate crystal.

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Authors and Affiliations

  1. Shevchenko National State University, Kiev, 03127, Ukraine

    I. V. Ostrovskii, A. B. Nadtochii, O. A. Korotchenkov & M. V. Nikandrova

Authors
  1. I. V. Ostrovskii
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  2. A. B. Nadtochii
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  3. O. A. Korotchenkov
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  4. M. V. Nikandrova
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Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 73, No. 10, 2003, pp. 97–100.

Original Russian Text Copyright © 2003 by Ostrovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Nadtochi\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Korotchenkov, Nikandrova.

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Ostrovskii, I.V., Nadtochii, A.B., Korotchenkov, O.A. et al. Q factor of lithium niobate piezoelectric transducers at high excitation levels. Tech. Phys. 48, 1315–1318 (2003). https://doi.org/10.1134/1.1620127

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  • DOI: https://doi.org/10.1134/1.1620127

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