去极化
铁电性
反铁电性
极化(电化学)
联轴节(管道)
材料科学
凝聚态物理
磁滞
双层
电介质
物理
膜
光电子学
复合材料
生物物理学
化学
生物
生物化学
物理化学
作者
Chaodan Zheng,Zhang Duan-Ming,Xinming Liu,Yang Bin,Chaojun Liu,Jun Yu
标识
DOI:10.1088/0256-307x/27/1/017702
摘要
A ferroelectric bilayer model considering depolarization field and interfacial coupling is proposed and the expression of the depolarization field is derived. The spatial profiles of spontaneous polarization and hysteresis loops are calculated using the numerical method with and without considering the depolarization field. The effects of the depolarization field and interfacial coupling on the polarization of second-order ferroelectric bilayers are studied systematically. When interfacial coupling is ferroelectric coupling, the interface spontaneous polarization increases and the area of hysteresis loop becomes larger with increasing coupling. When interfacial coupling is antiferroelectric coupling, the depolarization field makes the central loop become smaller and the shape of the hysteresis loop becomes steep. Meanwhile, as interfacial coupling increases, the outer loops stretch further out horizontally and the size of the central loop widens.
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