Volume 111, Number 5, September 2015
|Number of page(s)||6|
|Published online||14 September 2015|
Multidomain switching in the ferroelectric nanodots
1 University of Lorraine, IECL, CNRS UMR 7502 - 54506 Vandœuvre-lès-Nancy Cedex, France
2 University of Picardie, Laboratory of Condensed Matter Physics - 80039 Amiens Cedex 1, France
3 L. D. Landau Institute for Theoretical Physics - Moscow, Russia
Received: 30 August 2015
Accepted: 1 September 2015
Controlling the polarization switching in the ferroelectric nanocrystals, nanowires and nanodots has an inherent specificity related to the emergence of depolarization field that is associated with the spontaneous polarization. This field splits the finite-size ferroelectric sample into polarization domains. Here, based on 3D numerical simulations, we study the formation of 180° polarization domains in a nanoplatelet, made of uniaxial ferroelectric material, and show that in addition to the polarized monodomain state, the multidomain structures, notably of stripe and cylindrical shapes, can arise and compete during the switching process. The multibit switching protocol between these configurations may be realized by temperature and field variations.
PACS: 77.80.Dj – Domain structure; hysteresis / 64.60.an – Finite-size systems / 02.60.Cb – Numerical simulation; solution of equations
© EPLA, 2015
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