| P(VDF-TrFE)铁电聚合物薄膜不对称铁电开关现象 |
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| 引用本文： | 朱国栋,罗晓雅,张吉皓,严学俭. P(VDF-TrFE)铁电聚合物薄膜不对称铁电开关现象[J]. 化学物理学报, 2010, 23(4): 425-430 |
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| 作者姓名： | 朱国栋 罗晓雅 张吉皓 严学俭 |
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| 作者单位： | 复旦大学材料科学系，上海200433;复旦大学材料科学系，上海200433;复旦大学材料科学系，上海200433;复旦大学材料科学系，上海200433 |
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| 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．
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| 关 键 词： | 铁电聚合物，铁电开关，P(VDF-TrFE) |
| 收稿时间： | 2010-03-18 |
Symmetric Ferroelectric Switching in Ferroelectric Vinylidene Fluoride and Trifluoroethylene Copolymer Films |
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| Guo-dong Zhu,Xiao-ya Luo,Ji-hao Zhang and Xue-jian Yan. Symmetric Ferroelectric Switching in Ferroelectric Vinylidene Fluoride and Trifluoroethylene Copolymer Films[J]. Chinese Journal of Chemical Physics, 2010, 23(4): 425-430 |
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| Authors: | Guo-dong Zhu Xiao-ya Luo Ji-hao Zhang Xue-jian Yan |
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| Affiliation: | Department of Materials Science, Fudan University, Shanghai 200433, China;Department of Materials Science, Fudan University, Shanghai 200433, China;Department of Materials Science, Fudan University, Shanghai 200433, China;Department of Materials Science, Fudan University, Shanghai 200433, China |
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| Abstract: | 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. |
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| Keywords: | Ferroelectric polymer Ferroelectric switching Poly(vinylidene fluoride) |
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