High electric tunability of relaxor ferroelectric Langmuir–Blodgett terpolymer films
High electric tunability of relaxor ferroelectric Langmuir–Blodgett terpolymer films
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DOI：
10.1063/1.3026535
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发表时间：
2008-11
影响因子：
4
通讯作者：
Jianlu Wang;Xiangjian Meng;S. Yuan;Jing Yang;Jinglan Sun;Haisheng Xu;J. Chu
中科院分区：
文献类型：
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作者：
Jianlu Wang;Xiangjian Meng;S. Yuan;Jing Yang;Jinglan Sun;Haisheng Xu;J. Chu
采用Langmuir-Blodgett （LB）技术在铝包覆聚酰亚胺衬底上制备了聚偏氟乙烯-三氟乙烯-氯氟乙烯三元共聚物薄膜。在150 ~ 350 K范围内研究了薄膜的电学性能。电介质的最大温度和测量频率服从Vogel-Fulcher函数[J]。点。陶瓷。Soc. 8,339 (1925)；理论物理。[Z. 22, 645(1921)]法律。在50 MV/m和240 MV/m下，薄膜的室温电可调性分别为42.6%和80%。基于LB膜特殊的微观结构，讨论了LB膜具有高可调性的原因。
Poly(vinylidene fluoride-trifluoroethylene-chlorofloroethylene) terpolymer films have been fabricated on Al-coated polyimide substrates using the Langmuir–Blodgett (LB) technology. The electrical properties of the films have been investigated from 150 to 350 K. The temperature of the dielectric maximum and the measured frequency obeys the Vogel–Fulcher [J. Am. Ceram. Soc. 8, 339 (1925); Phys. Z. 22, 645 (1921)] law. The electric tunabilities of the films at room temperature are 42.6% and 80% under 50 and 240 MV/m, respectively. The reasons for the high tunability are discussed based on the special microstructure of the LB films.