电子辐照的P(VDF/TrFE)共聚物的铁电弛豫异常现象

功能材料与器件学报 , 2009, 15(2): 101-105. doi: 10.3969/j.issn.1007-4252.2009.02.001

电子辐照的P(VDF/TrFE)共聚物的铁电弛豫异常现象

陈小刚 ^1, , 姚熹 ^2, , 张德生 ^3, , 宋志棠 ^4, , 沈波 ^5, , 张良莹 ^6,

1.同济大学功能材料研究所,上海,200092;中国科学院微系统与信息技术研究所纳米技术研究室,上海,200050

2.同济大学功能材料研究所,上海,200092

3.同济大学功能材料研究所,上海,200092

4.中国科学院微系统与信息技术研究所纳米技术研究室,上海,200050

5.同济大学功能材料研究所,上海,200092

6.同济大学功能材料研究所,上海,200092

基金项目: 自然科学基金面上项目(50073017) 上海市重点学科建设项目

关键词：铁电共聚物 , 电子辐照 , 铁电弛豫 , 铁电异常

Abnormal ferroeleetric relaxation in the electron-irradiated copolymers of vinylidenefluoride and trifluoroethylene

本文研究了聚偏氟乙烯和三氟乙烯的铁电共聚物P(VDF/TrFE)的铁电弛豫现象,并讨论了铁电弛豫异常想象.比较了VDF不同含量的共聚物在辐照前后铁电性能的改变,电子辐照大大改变了聚合物样品的性能,使VDF含量52%和70%的样品出现了明显的铁电弛豫现象,但发现在VDF含量为80%的样品中存在一种铁电弛豫异常现象:铁电居里峰随着频率的升高而向低温端移动.研究样品的二氟乙烯(VDF)的摩尔含量在52%～80%之间.

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电子辐照的P(VDF/TrFE)共聚物的铁电弛豫异常现象

Abnormal ferroeleetric relaxation in the electron-irradiated copolymers of vinylidenefluoride and trifluoroethylene

参考文献