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Composition effect on the elastic properties of langasite

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Abstract

The frequency coefficient, an important performance parameter of piezoelectric materials, which is used in determining vibrational frequencies of crystalline piezoelectric elements, is shown to vary along the length of a crystal. The dependences of the frequency coefficient and elastic stiffness coefficient on unit-cell parameters have the form of a parabolic function with a maximum, while the dependence of the frequency coefficient on \( {1 \mathord{\left/ {\vphantom {1 {(\sqrt \rho )}}} \right. \kern-\nulldelimiterspace} {(\sqrt \rho )}} \) (ρ is the density of the crystal) is linear. Polarity changes within a sample are revealed, which may be due to the stress arising from variations in melt composition during crystal growth.

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Authors and Affiliations

  1. All-Russia Research Institute of Mineral Materials Synthesis, Institutskaya ul. 1, Aleksandrov, Vladimir oblast, 601650, Russia

    A. B. Dubovskii

  2. Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, 119571, Russia

    E. A. Tyunina, E. N. Domoroshchina & G. M. Kuz’micheva

  3. Moscow State University, Vorob’evy gory 1, Moscow, 119899, Russia

    V. B. Rybakov

Authors
  1. A. B. Dubovskii
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  2. E. A. Tyunina
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  3. E. N. Domoroshchina
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  4. G. M. Kuz’micheva
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  5. V. B. Rybakov
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Correspondence to G. M. Kuz’micheva.

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Original Russian Text © A.B. Dubovskii, E.A. Tyunina, E.N. Domoroshchina, G.M. Kuz’micheva, and V.B. Rybakov, 2008, published in Neorganicheskie Materialy, 2008, Vol. 44, No. 5, pp. 601–607.

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Dubovskii, A.B., Tyunina, E.A., Domoroshchina, E.N. et al. Composition effect on the elastic properties of langasite. Inorg Mater 44, 520–526 (2008). https://doi.org/10.1134/S0020168508050166

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  • DOI: https://doi.org/10.1134/S0020168508050166

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