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Optical second harmonic generation probe of two-dimensional ferroelectricity

O. A. Aktsipetrov, T. V. Misuryaev, T. V. Murzina, L. M. Blinov, V. M. Fridkin, S. P. Palto

physics.opticsarXiv:physics/9909010

Abstract

Optical second harmonic generation (SHG) is used as a noninvasive probe of two-dimensional (2D) ferroelectricity in Langmuir-Blodgett (LB) films of copolymer vinylidene fluoride with trifluorethylene. The surface 2D ferroelectric-paraelectric phase transition in the topmost layer of LB films and a thickness independent (almost 2D) transition in the bulk of these films are observed in temperature studies of SHG.

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