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Open AccessReview

Polarization Switching in 2D Nanoscale Ferroelectrics: Computer Simulation and Experimental Data Analysis

1
Institute of Mathematical Problems of Biology, Keldysh Institute of Applied Mathematics, RAS, Moscow 142290, Russia
2
National Lab. Infrared Physics, Shanghai Institute of Technical Physics, CAS, Shanghai 200083, China
3
Federal Center of Photonics and Crystallography RAS, Shubnikov Institute of Crystallography RAS, Moscow 117333, Russia
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(9), 1841; https://doi.org/10.3390/nano10091841
Received: 22 August 2020 / Revised: 10 September 2020 / Accepted: 12 September 2020 / Published: 15 September 2020
(This article belongs to the Special Issue Simulation and Modeling of Nanomaterials)
The polarization switching kinetics of nanosized ferroelectric crystals and the transition between homogeneous and domain switching in nanoscale ferroelectric films are considered. Homogeneous switching according to the Ginzburg-Landau-Devonshire (LGD) theory is possible only in two-dimensional (2D) ferroelectrics. The main condition for the applicability of the LGD theory in such systems is its homogeneity along the polarization switching direction. A review is given of the experimental results for two-dimensional (2D) films of a ferroelectric polymer, nanosized barium titanate nanofilms, and hafnium oxide-based films. For ultrathin 2D ferroelectric polymer films, the results are confirmed by first-principle calculations. Fitting of the transition region from homogeneous to domain switching by sigmoidal Boltzmann functions was carried out. Boltzmann function fitting data enabled us to correctly estimate the region sizes of the homogeneous switching in which the LGD theory is valid. These sizes contain several lattice constants or monolayers of a nanosized ferroelectrics. View Full-Text
Keywords: LGD theory; polarization; nanoscale ferroelectrics; kinetics; homogeneous switching; computer simulation; fitting LGD theory; polarization; nanoscale ferroelectrics; kinetics; homogeneous switching; computer simulation; fitting
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MDPI and ACS Style

Paramonova, E.; Bystrov, V.; Meng, X.; Shen, H.; Wang, J.; Fridkin, V. Polarization Switching in 2D Nanoscale Ferroelectrics: Computer Simulation and Experimental Data Analysis. Nanomaterials 2020, 10, 1841. https://doi.org/10.3390/nano10091841

AMA Style

Paramonova E, Bystrov V, Meng X, Shen H, Wang J, Fridkin V. Polarization Switching in 2D Nanoscale Ferroelectrics: Computer Simulation and Experimental Data Analysis. Nanomaterials. 2020; 10(9):1841. https://doi.org/10.3390/nano10091841

Chicago/Turabian Style

Paramonova, Ekaterina; Bystrov, Vladimir; Meng, Xiangjian; Shen, Hong; Wang, Jianlu; Fridkin, Vladimir. 2020. "Polarization Switching in 2D Nanoscale Ferroelectrics: Computer Simulation and Experimental Data Analysis" Nanomaterials 10, no. 9: 1841. https://doi.org/10.3390/nano10091841

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