Two-dimensional ferroelectricity and second harmonic generation in PVDF Langmuir-Blodgett films

被引：13

作者：

Aktsipetrov, OA ^{[1
]}

Blinov, LM

Fridkin, VM

Misuryaev, TV

Murzina, TV

Palto, SP

Yudin, SG

机构：

[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119899, Russia

[2] Russian Acad Sci, Inst Cristallog, Moscow 117333, Russia

来源：

SURFACE SCIENCE | 2000年 / 454卷

基金：

俄罗斯基础研究基金会;

关键词：

second harmonic generation; surface electrical transport (surface conductivity; surface recombination; etc.); surface thermodynamics (including phase transitions);

D O I：

10.1016/S0039-6028(00)00271-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two-dimensional (2D) ferroelectricity and 2D ferroelectric-paraelectric phase transitions are experimentally studied, for the first time, by means of optical second harmonic generation (SHG) in ultrathin Langmuir-Blodgett (LB) films of vinylidene fluoride with trifluoroethylene. The temperature dependence of the SHG intensity confirms the existence of two types of 2D ferroelectric-paraelectric phase transition: the first one in the topmost layer of LB films and the other, almost thickness independent, in the bulk of ferroelectric LB films. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：1016 / 1020

页数：5

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