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Long-time relaxation phenomena in Pb0.94Ba0.06Sc0.5Nb0.5O3 (PBSN-6) single crystals

  • Magnetism and Ferroelectricity
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Abstract

Long-time polarization relaxation in the temperature range where PBSN-6 single crystals reside in the relaxor state was studied. An analysis of the time dependence of the permittivity ε′(t) performed at measuring frequencies from 1 Hz to 1 kHz in weak electric fields E 0 showed that the relaxation (or freezing) times derived by extrapolating relations of the type ε′(t) ∼ log(t/t 0) and ε′(t) ∼ exp{−[ln(t/t 0)]β} range from 108 to 1011 min and depend substantially on the bias voltage applied to the sample. A study of the pattern of the dielectric response in moderate and strong infralow-frequency fields revealed that, after a sample was maintained under a bias lower than the coercive force, it no longer exhibited the additional anomalies in the amplitude dependences of the effective loss tangent taneff(E 0) than were observed in a thermally recuperated sample.

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Authors and Affiliations

  1. Volgograd State Architecture and Civil Engineering University, Volgograd, 400074, Russia

    A. I. Burkhanov & S. V. Kravchenko

  2. Institute of Physics, Rostov State University, pr. Stachki 194, Rostov-on Don, 344090, Russia

    A. V. Shil’nikov, I. P. Raevskii & V. P. Sakhnenko

Authors
  1. A. I. Burkhanov
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  2. S. V. Kravchenko
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  3. A. V. Shil’nikov
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  4. I. P. Raevskii
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  5. V. P. Sakhnenko
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__________

Translated from Fizika Tverdogo Tela, Vol. 47, No. 12, 2005, pp. 2207–2211.

Original Russian Text Copyright © 2005 by Burkhanov, Kravchenko, Shil’nikov, Raevski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Sakhnenko.

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Burkhanov, A.I., Kravchenko, S.V., Shil’nikov, A.V. et al. Long-time relaxation phenomena in Pb0.94Ba0.06Sc0.5Nb0.5O3 (PBSN-6) single crystals. Phys. Solid State 47, 2299–2303 (2005). https://doi.org/10.1134/1.2142894

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  • DOI: https://doi.org/10.1134/1.2142894

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