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Metal Salt-Induced Ferroelectric Crystalline Phase in Poly(vinylidene fluoride) Films

✍ Scribed by Sun Yoon; Arun Anand Prabu; Kap Jin Kim; Cheolmin Park

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
561 KB
Volume
29
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

In this Communication, the effect of varying mass fractions (0–20 wt.‐%) of calcium chloride (CaCl~2~) salt on the α‐ and β‐phase content of poly(vinylidene fluoride) (PVDF) as‐cast films were investigated. Spectral and X‐ray studies revealed the maximum ferroelectric β‐phase for the addition of 15 wt.‐% of CaCl~2~ in PVDF compared to neat PVDF samples. The dense β‐phase dominant PVDF–CaCl~2~ (15 wt.‐%) thick film used as a ferroelectric insulator in one‐capacitor (1C) type random access memory device exhibited a remnant polarization of 3.1 µC · cm^2^, and is a good indication that the unoriented PVDF–CaCl~2~ films can be used in electronic applications without further stretching process.

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📜 SIMILAR VOLUMES

γ→β Phase transformation induced in poly
γ→β Phase transformation induced in poly(vinylidene fluoride) by stretching
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## Abstract The purpose of this work was to show in a conclusive way the γ→β phase transformation induced by uniaxial stretching in poly(vinylidene fluoride). Poly(vinylidene fluoride) films were melted and crystallized at 163°C for 36 h. Under these conditions, a mixture of α and γ phases was form

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## Abstract Ultra‐thin films of poly(vinylidene fluoride) (PVDF) and its organically modified silicate (OMS) nanocomposites were prepared by heat‐controlled spin coating and characterized using FTIR‐GIRAS, AFM, DC‐EFM, and __P__–__E__ measurements. Incorporation of OMS, Lucentite STN into the PVDF