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Specific Heat and the Dielectric Properties of Bi0.8Ho0.2FeO3 Multiferroic

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Abstract

The specific heat and the dielectric permittivity of Bi0.8Ho0.2FeO3 multiferroics have been studied in the wide temperature range 300–750 K. The doping with rare-earth element holmium is found to lead to substantial changes in the temperature dependences of specific heat Cp and dielectric permittivity ε' at high temperatures. The additional contribution to the specific heat is shown can be interpreted as a Schottky anomaly for three-level states which form due to a distortion of the lattice parameters as a result of doping. Additional anomaly characteristic of a phase transition is observed in temperature dependences of Cp and ε'. The results are discussed in combination with the data of structural studies.

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Authors and Affiliations

  1. Institute of Physics, Dagestan Federal Scientific Center of the Russian Academy of Sciences, Makhachkala, Russia

    S. N. Kallaev, N. M. Alikhanov & Z. M. Omarov

  2. Dagestan State University, Makhachkala, Russia

    S. A. Sadykov & N. M. Alikhanov

  3. Dagestan State Technical University, Makhachkala, Russia

    R. G. Mitarov

  4. Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia

    L. A. Reznichenko

Authors
  1. S. N. Kallaev
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  2. S. A. Sadykov
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  3. N. M. Alikhanov
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  4. Z. M. Omarov
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  5. R. G. Mitarov
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  6. L. A. Reznichenko
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Correspondence to S. N. Kallaev.

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Translated by Yu. Ryzhkov

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Kallaev, S.N., Sadykov, S.A., Alikhanov, N.M. et al. Specific Heat and the Dielectric Properties of Bi0.8Ho0.2FeO3 Multiferroic. Phys. Solid State 62, 1039–1042 (2020). https://doi.org/10.1134/S1063783420060098

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  • DOI: https://doi.org/10.1134/S1063783420060098

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