摘要
报道了铁电聚合物薄膜中观测到的不对称铁电开关双峰现象．当薄膜被略低于其矫顽场的电场极化时可观测到铁电开关双峰，当进一步连续施加超过矫顽场的电场后这一开关双峰现象消失．用空间电荷的注入和再分布模型对这一不对称现象进行了探讨．
We report the observation of asymmetric switching dual peaks in ferroelectric copolymer films. These dual peaks occurs when the poling electric field is just below the coercive field and can be removed by continuous application of high enough switching voltage. Our experimental observations can be explained by the injection and the redistribution of space charges in ferroelectric films.
基金
ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China （No.10804020）, the Specialized Research Fund for the Doctoral Program of Higher Education of China （No.200802461088）, and the Shanghai Leading Academic Discipline Project （No.B113）.
关键词
铁电聚合物
铁电开关
P(VDF-TrFE)
Ferroelectric polymer, Ferroelectric switching, Poly（vinylidene fluoride）
