Formation of vortex and antivortex polarization states in ferroelectric films

Details Formation of vortex and antivortex polarization states in ferroelectric films Formation of vortex and antivortex polarization states in ferroelectric films

2011-06-16

arxiv.org/abs/1106.3191v1

Physics

Condensed Matter

Materials Science

9 pages, 4 figures

Scientific paper

An effort based on the kinetic model allowed by Landau-Ginzburg-Devonshire theory is presented here. The formation of vortex, antivortex states in ferroelectric films are reported and theoretically explained. Phase transition in toroidal moment is observed. Vortex-antivortex-vortex (V-AV-V) triplet is generated by applying inhomogeneous transverse static localized fields in x-y plane. A specific boundary condition is used to keep the spirit of vortex state i.e. the net polarization across the boundary is always zero. %This is neither a periodic nor an open circuit electric boundary condition.

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