Enhanced dielectric and ferroelectric properties in the artificial polymer multilayers
Enhanced dielectric and ferroelectric properties in the artificial polymer multilayers
复制标题
人造聚合物多层膜中增强的介电和铁电性能
DOI：
10.1063/1.4866441
复制
发表时间：
2014
影响因子：
4
通讯作者：
Chu J. H.
中科院分区：
文献类型：
--
作者：
Zhao X. L.;Wang J. L.;Liu B. L.;Tian B. B.;Zou Y. H.;Sun S.;Sun J. L.;Meng X. J.;Chu J. H.
Multilayers consisting of alternating ferroelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) copolymer and relaxor poly(vinylidene fluoride-trifluoroethylene-chlorofloroethylene) (P(VDF-TrFE-CFE)) terpolymer with different periodicities in thickness were prepared. A superlattice-like structure is shown in the polymer multilayer as the periodic thickness is lower than a critical value. The dielectric constant of the multilayer with a small periodic thickness is two times higher than that of the P(VDF-TrFE) copolymer over a temperature range between 300 K and 350 K. The multilayer also shows a good ferroelectricity in the same temperature range. The enhanced electrical properties of the multilayers are due to the long-range ferroelectric coupling.
