| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Size Effects of the Properties in a Ferroelectric Bilayer Film with Surface Transition Layers |
| CUI Lian*, XU Quan, HAN Zhi-You, XU Xu |
Department of Physics, Daqing Normal University, Daqing 163712
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XU Xu, XU Quan, HAN Zhi-You et al 2012 Chin. Phys. Lett. 29 037701 |
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Abstract Using the transverse Ising model theory, a ferroelectric bilayer film, considering the surface transition layer within each constituent slab and an interfacial coupling between two slabs, is investigated in the framework of the mean-field approximation. We discuss in detail the thickness effects of the spontaneous polarization and dielectric susceptibility of a ferroelectric bilayer film under two conditions of interfacial coupling: ferroelectric and antiferroelectric coupling. The results show some unexpected phenomena for a small thickness of a ferroelectric bilayer film.
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| Keywords:
77.80.Bh
77.55.+f
77.80.Dj
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Received: 28 August 2011
Published: 11 March 2012
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