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Thermophysical properties of PLZT ferroelectric ceramics with a nanopolar structure

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Abstract

The heat capacity, thermal expansion coefficient, and deformation of the PLZT-9/65/35 compound are studied in the temperature range 150–800 K. Diffuse anomalies are detected in the temperature dependences of the heat capacity and thermal expansion coefficient over wide temperature ranges of 250–650 and 330–550 K, respectively. The anomalous behavior of the heat capacity in the temperature range 250–650 K is shown to be caused by the appearance of two-level states (Schottky anomaly). The results obtained are discussed along with the data of structural and dielectric studies.

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Authors and Affiliations

  1. Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, ul. 26 Bakinskikh Komissarov 94, Makhachkala, 367003, Dagestan, Russia

    S. N. Kallaev, Z. M. Omarov, A. R. Bilalov & S. A. Sadykov

  2. Dagestan State Technical University, Makhachkala, 367015, Dagestan, Russia

    R. G. Mitarov

  3. Institute of Solid State Physics, University of Latvia, bulv. Raina. 19, Riga, LV-1063, Latvia

    K. Bormanis

Authors
  1. S. N. Kallaev
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  2. Z. M. Omarov
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  3. R. G. Mitarov
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  4. A. R. Bilalov
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  5. K. Bormanis
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  6. S. A. Sadykov
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Correspondence to S. N. Kallaev.

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Original Russian Text © S.N. Kallaev, Z.M. Omarov, R.G. Mitarov, A.R. Bilalov, K. Bormanis, S.A. Sadykov, 2010, published in Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2010, Vol. 138, No. 3, pp. 475–481.

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Kallaev, S.N., Omarov, Z.M., Mitarov, R.G. et al. Thermophysical properties of PLZT ferroelectric ceramics with a nanopolar structure. J. Exp. Theor. Phys. 111, 421–426 (2010). https://doi.org/10.1134/S1063776110090116

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  • DOI: https://doi.org/10.1134/S1063776110090116

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