Study of ferroelectric thin films by ising model with a depolarizing field

In this paper, thin films are considered within the framework of the Ising model with a depolarizing field. In the existing works, the depolarizing field is considered to be proportional to the polarization, but it is not suitable for polydomain films. According to our approach, the depolarizing fie...

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Bibliographic Details
Published inFerroelectrics Vol. 590; no. 1; pp. 56 - 65
Main Authors Menshikov, E. V., Maksimova, O. G., Egorov, V. I.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 22.06.2022
Taylor & Francis Ltd
Subjects
Depolarization
depolarizing field
Dipole interactions
Domains
Ferroelectricity
Ising model
Thickness
thin ferroelectric films
Thin films
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Summary:In this paper, thin films are considered within the framework of the Ising model with a depolarizing field. In the existing works, the depolarizing field is considered to be proportional to the polarization, but it is not suitable for polydomain films. According to our approach, the depolarizing field energy is calculated as the difference between the energy of dipole-dipole interactions in a bulk sample and a thin film. Stripe domains with neutral and charged walls can appear in the considered model. We also studied domain structures arising in films of different thicknesses with increasing temperature and depolarizing field value.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2022.2037939