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Acoustic properties of the disordered relaxor ferroelectric PbSc1/2Ta1/2O3

  • Relaxor Ferroelectrics
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Abstract

The behavior of acoustic phonons in crystals of a relaxor ferroelectric, namely, the lead scandium tantalate PbSc1/2Ta1/2O3 (PST), is studied in the vicinity of the diffuse phase transition. The behavior of longitudinal and transverse acoustic phonons in a PST single crystal is examined using Brillouin scattering. The phonon subsystem is found to behave anomalously in the vicinity of T = 297 K, which can probably be assigned to the existence of a phase transition. Analysis of the results obtained yields the values of the elastic moduli C11, C12, and C44 for the cubic phase of the crystal over a wide temperature range.

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Authors and Affiliations

  1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia

    A. I. Fedoseev, S. G. Lushnikov & S. N. Gvasaliya

  2. Neutron Scattering Laboratory, Paul Scherrer Institute, Willigen, 5234, Switzerland

    S. N. Gvasaliya

  3. Institute of Materials Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan

    S. Kojima

Authors
  1. A. I. Fedoseev
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  2. S. G. Lushnikov
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  3. S. N. Gvasaliya
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  4. S. Kojima
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Additional information

Original Russian Text © A.I. Fedoseev, S.G. Lushnikov, S.N. Gvasaliya, S. Kojima, 2006, published in Fizika Tverdogo Tela, 2006, Vol. 48, No. 6, pp. 1038–1041.

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Fedoseev, A.I., Lushnikov, S.G., Gvasaliya, S.N. et al. Acoustic properties of the disordered relaxor ferroelectric PbSc1/2Ta1/2O3 . Phys. Solid State 48, 1102–1105 (2006). https://doi.org/10.1134/S1063783406060266

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  • DOI: https://doi.org/10.1134/S1063783406060266

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