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Title: Size-dependent polarization distribution in ferroelectric nanostructures : phase field simulations
Authors: Wang, Jie
Kamlah, Marc
Zhang, Tong-Yi
Li, Yulan
Chen, Long-Qing
Keywords: Dielectric polarization
Ferroelectric materials
Issue Date: Apr-2008
Citation: Applied physics letters, v. 92, 162905 (2008)
Abstract: From phase field simulations, we investigate the size-dependent polarization distribution in ferroelectric nanostructures embedded in a nonferroelectric medium. The simulation results exhibit that vortex structures of polarizations and single-domain structures are formed in ferroelectric nanodots and nanowires, respectively. Furthermore, a single-vortex structure is formed in the ferroelectric nanodots if the aspect ratio of thickness to lateral size is less than a critical value, whereas the ferroelectric nanodots are in a multivortex state if the aspect ratio exceeds the critical value. When the aspect ratio approaches infinity, nanodots will become nanowires, in which polarizations are homogeneous.
Rights: Applied Physics Letters © copyright (2008) American Institute of Physics. The Journal's web site is located at
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