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Literature DB >> 31493015

Polymer matrix ferroelectric composites under pressure: Negative electric capacitance and glassy dynamics.

Szymon Starzonek¹, Aleksandra Drozd-Rzoska², Sylwester J Rzoska², Kena Zhang³, Emilia Pawlikowska², Aleksandra Kȩdzierska-Sar², Mikolaj Szafran⁴, Feng Gao³.

Abstract

This report presents the results of high-pressure and broadband dielectric spectroscopy studies in polyvinylidene difluoride (PVDF) and barium strontium titanate (BST) microparticles composites (BST/PVDF). It shows that the Arrhenius behaviour for the temperature-related dynamics under atmospheric pressure is coupled to Super-Arrhenius/Super-Barus isothermal pressure changes of the primary relaxation time. Following these results, an explanation of the unique behaviour of the BST/PVDF composite is proposed. Subsequently, it is shown that when approaching the GPa domain the negative electric capacitance phenomenon occurs.

Entities: Chemical

Keywords: Soft Matter: Polymers and Polyelectrolytes

Year: 2019 PMID： 31493015 DOI： 10.1140/epje/i2019-11876-9

Source DB: PubMed Journal: Eur Phys J E Soft Matter ISSN： 1292-8941 Impact factor: 1.890

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References

11 in total

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Authors: A Drozd-Rzoska; S J Rzoska
Journal: Phys Rev E Stat Nonlin Soft Matter Phys Date: 2002-03-15

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Authors: V Sencadas; S Lanceros-Méndez; R Sabater i Serra; A Andrio Balado; J L Gómez Ribelles
Journal: Eur Phys J E Soft Matter Date: 2012-05-30 Impact factor: 1.890

3. Derivative-based analysis for temperature and pressure evolution of dielectric relaxation times in vitrifying liquids.

Authors: Aleksandra Drozd-Rzoska; Sylwester J Rzoska
Journal: Phys Rev E Stat Nonlin Soft Matter Phys Date: 2006-04-04

Polymer matrix ferroelectric composites under pressure: Negative electric capacitance and glassy dynamics.

1. Complex dynamics of isotropic 4-cyano-4-n-pentylbiphenyl (5CB) in linear and nonlinear dielectric relaxation studies.

2. Relaxation dynamics of poly(vinylidene fluoride) studied by dynamical mechanical measurements and dielectric spectroscopy.

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