Ultrathin ferroelectric polymer films

被引：9

作者：

Ducharme, S ^{[1
]}

Bune, A ^{[1
]}

Fridkin, V ^{[1
]}

Blinov, L ^{[1
]}

Palto, S ^{[1
]}

Petukhova, N ^{[1
]}

Yudin, S ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST CRYSTALLOG,MOSCOW 117333,RUSSIA

来源：

FERROELECTRICS | 1997年 / 202卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/00150199708213458

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have established ferroelectric switching and observed a novel conductance switching phenomenon in the first ultrathin ferroelectric polymer films fabricated by the Langmuir-Blodgett technique. The films consist of up to thirty monolayers of a copolymer of vinylidene fluoride (70%) and trifluoroethylene (30%) and exhibit classic ferroelectric behavior, including a first-order ferroelectric phase transition, polarization reversal (switching), thermal hysteresis of the capacitance, field-dependent switching dynamics, pyroelectricity, and piezoelectricity. The results of polarization, capacitance, switching, spectroscopic, and pyroelectric measurements on these highly crystalline and fully oriented films provide unprecedented detail concerning the thermodynamic properties of the ferroelectric and nonferroelectric states in ultrathin polymer films. The electric field and the film thickness have a strong influence on the ferroelectric properties.

引用

页码：29 / 37

页数：9

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