Effects of electric field on the molecular orientation in evaporated ferroelectric vinylidene fluoride and trifluoroethylene copolymer films

Effects of electric field on the molecular orientation in evaporated ferroelectric vinylidene fluoride and trifluoroethylene copolymer films

An electric field was applied during the evaporation process to obtain ferroelectric polymeric ultrathin films with uniaxial dipole orientation. The crystal structure and molecular orientation in the evaporated (VDF/TrFE) copolymer films were examined with a recently developed total reflection X-ray...

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Veröffentlicht in:Japanese Journal of Applied Physics 1993-03, Vol.32 (3A), p.1248-1252
Hauptverfasser: YOSHIDA, Y, HORIUCHI, T, MATSUSHIGE, K
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Sprache:eng
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Applied sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
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container_issue 3A
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container_title Japanese Journal of Applied Physics
container_volume 32
creator YOSHIDA, Y
HORIUCHI, T
MATSUSHIGE, K
description An electric field was applied during the evaporation process to obtain ferroelectric polymeric ultrathin films with uniaxial dipole orientation. The crystal structure and molecular orientation in the evaporated (VDF/TrFE) copolymer films were examined with a recently developed total reflection X-ray diffractometry, revealing that polar Form I crystals with the dipole moment oriented normal to the substrate can be formed by evaporating the samples under a high electric field (6 MV/m). Moreover, we evaluated the ferroelectric-paraelectric phase transition behavior of the evaporated films from a structural viewpoint.
doi_str_mv 10.1143/jjap.32.1248
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source IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link
subjects Applied sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
title Effects of electric field on the molecular orientation in evaporated ferroelectric vinylidene fluoride and trifluoroethylene copolymer films
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