Microscopic characterization of polarization fatigue in ferroelectric vinylidene fluoride and trifluoroethylene copolymer films
โ Scribed by GuoDong Zhu; JiHao Zhang; XiaoYa Luo; XueJian Yan
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 629 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1566-1199
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In this paper we present new experiments on the switching of the polarization in thin (< 1 ~tm) ferroelectric copolymer films of P(VDF-TrFE). We observed an unexpectedly short switching time for these thin films: The polarization of a 0.2 ~tm thick film could be reversed by poling fields of 600MV/m
The ferroelectric and piezoelectric properties of melt-quenched unoriented poly(vinylidene fluoride-trifluoroethylene) (73 : 27) copolymer films as a function of the number of poling cycles have been studied. The investigation revealed that quenched films exhibit a decrease in D-E hysteresis behavio