摘要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.
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.
CUI Lian*, XU Quan, HAN Zhi-You, XU Xu. Size Effects of the Properties in a Ferroelectric Bilayer Film with Surface Transition Layers[J]. 中国物理快报, 2012, 29(3): 37701-037701.
CUI Lian, XU Quan, HAN Zhi-You, XU Xu. Size Effects of the Properties in a Ferroelectric Bilayer Film with Surface Transition Layers. Chin. Phys. Lett., 2012, 29(3): 37701-037701.
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