Loss of relaxor properties due to dipolar interactions in ferroelectrics: A 2D Monte Carlo study

Authors

  • O. García-Zaldívar,

    Corresponding author
    1. Physics Faculty – Materials Science and Technology Institute (IMRE), Havana University, Calle San Lázaro esq. L, Vedado, La Habana, CP 10400, Cuba
    • Phone: (+537) 870 5707
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  • R. Díaz-Méndez,

    1. Nanophysics Group, Department of Physics, Electric Engineering Faculty, CUJAE, Ave. 114 final, La Habana, Cuba
    2. “Henri Poincaré” Group of Complex Systems, Physics Faculty, Havana University, La Habana, CP 10400, Cuba
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  • F. Calderón-Piñar,

    1. Physics Faculty – Materials Science and Technology Institute (IMRE), Havana University, Calle San Lázaro esq. L, Vedado, La Habana, CP 10400, Cuba
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  • A. Peláiz-Barranco

    1. Physics Faculty – Materials Science and Technology Institute (IMRE), Havana University, Calle San Lázaro esq. L, Vedado, La Habana, CP 10400, Cuba
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Abstract

The behavior of the dielectric response in relaxor ferroelectric materials is studied by means of Monte Carlo simulations of a simple two-dimensional (2D) generic model. It is showed that the shifting with the frequency of the peak of the temperature dependence of the dielectric permittivity ε can be obtained just by considering a randomly distributed pinning anisotropy for the out-plane projection of the polar nanoregions. It is also showed that the consideration of a weak long-range dipolar interaction between nanodomains continuously drives the system to a non-relaxor ferroelectric state in which a single peak is observed for the dielectric permittivity.

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