Journal of Advanced Dielectrics, Volume. 12, Issue 3, 2250010(2022)

Temperature-activation mechanism of the temperature dependence of the dielectric constant of ferroelectric ceramics PZT

D. V. Kuzenko*
Author Affiliations
  • Science & Technology Center “Reaktivelektron” of the National Academy Science of Ukraine, Bakinskikh Komissarov Street, 83049 Donetsk, Ukraine
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    The theoretical possibility of the temperature-activation process of the temperature dependence of the dielectric constant of samples of ferroelectric ceramics lead zirconate titanate (PZT) at temperatures below the Curie point is considered. The model takes into account the 180° motion of the domain wall, which is located in the potential well. The values of activation energies ( 0.01, 0.1, 1 eV) were obtained from the experimental dependences of the logarithm of the dielectric constant on the reciprocal temperature. This is associated with three processes: initial vibrations of domain walls; separation of domain walls (DWs) from oxygen vacancies; the motion of DWs as a result of the motion of oxygen vacancies.The theoretical possibility of the temperature-activation process of the temperature dependence of the dielectric constant of samples of ferroelectric ceramics lead zirconate titanate (PZT) at temperatures below the Curie point is considered. The model takes into account the 180° motion of the domain wall, which is located in the potential well. The values of activation energies ( 0.01, 0.1, 1 eV) were obtained from the experimental dependences of the logarithm of the dielectric constant on the reciprocal temperature. This is associated with three processes: initial vibrations of domain walls; separation of domain walls (DWs) from oxygen vacancies; the motion of DWs as a result of the motion of oxygen vacancies.

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    D. V. Kuzenko. Temperature-activation mechanism of the temperature dependence of the dielectric constant of ferroelectric ceramics PZT[J]. Journal of Advanced Dielectrics, 2022, 12(3): 2250010

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    Paper Information

    Category: Research Articles

    Received: Feb. 20, 2022

    Accepted: May. 13, 2022

    Published Online: Nov. 1, 2022

    The Author Email: Kuzenko D. V. (danil.kuzenko@gmail.com)

    DOI:10.1142/S2010135X22500102

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