Citation
Oa. Aktsipetrov et al., Two-dimensional ferroelectricity and second harmonic generation in PVDF Langmuir-Blodgett films, SURF SCI, 454, 2000, pp. 1016-1020
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE SCIENCE
ISSN journal
00396028
→ ACNP
Volume
454
Year of publication
2000
Pages
1016 - 1020
Database
ISI
SICI code
0039-6028(20000520)454:<1016:TFASHG>2.0.ZU;2-Q
Abstract
Two-dimensional (2D) ferroelectricity and 2D ferroelectric-paraelectric pha
se 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 depe
ndence of the SHG intensity confirms the existence of two types of 2D ferro
electric-paraelectric phase transition: the first one in the topmost layer
of LB films and the other, almost thickness independent, in the bulk of fer
roelectric LB films. (C) 2000 Elsevier Science B.V. All rights reserved.