Ferroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF

Abstract The stabilization of δ-phase of poly(vinylidene fluoride) PVDF in a 14 µm-thickness ferroelectric membrane is achieved by a simple route based on the use of a dimethylformamide (DMF)/acetone solvent, in which the application of external electric field is not required. X-ray diffraction and...

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Autores principales:	O. García-Zaldívar, T. Escamilla-Díaz, M. Ramírez-Cardona, M. A. Hernández-Landaverde, R. Ramírez-Bon, J. M. Yañez-Limón, F. Calderón-Piñar
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c1d0f51e5a9741f18c9009c6e764de48
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spelling	oai:doaj.org-article:c1d0f51e5a9741f18c9009c6e764de482021-12-02T16:08:12ZFerroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF10.1038/s41598-017-06044-y2045-2322https://doaj.org/article/c1d0f51e5a9741f18c9009c6e764de482017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06044-yhttps://doaj.org/toc/2045-2322Abstract The stabilization of δ-phase of poly(vinylidene fluoride) PVDF in a 14 µm-thickness ferroelectric membrane is achieved by a simple route based on the use of a dimethylformamide (DMF)/acetone solvent, in which the application of external electric field is not required. X-ray diffraction and calorimetric experiments on heating reveal that, at 154 °C, the original mixture between ferroelectric δ-phase and paraelectric α-phase transits to a system with only this latter phase in the crystalline fraction. A gradual and slight increment of amorphous fraction up to the melting at 161 °C is also observed. The existence of δ-phase is corroborated by the occurrence of a broad maximum around 154 °C in dielectric permittivity measurements, as well as the hysteresis loops observed at room temperature. These results suggest a wide thermal window for a stable δ-phase, between room temperature and 154 °C, a subsequent transition into α-phase and the corresponding melting at 161 °C. The broad dielectric maximum observed around 154 °C in dielectric and calorimetric measurements, can be associated with a diffuse ferroelectric-paraelectric transition.O. García-ZaldívarT. Escamilla-DíazM. Ramírez-CardonaM. A. Hernández-LandaverdeR. Ramírez-BonJ. M. Yañez-LimónF. Calderón-PiñarNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q O. García-Zaldívar T. Escamilla-Díaz M. Ramírez-Cardona M. A. Hernández-Landaverde R. Ramírez-Bon J. M. Yañez-Limón F. Calderón-Piñar Ferroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF
description	Abstract The stabilization of δ-phase of poly(vinylidene fluoride) PVDF in a 14 µm-thickness ferroelectric membrane is achieved by a simple route based on the use of a dimethylformamide (DMF)/acetone solvent, in which the application of external electric field is not required. X-ray diffraction and calorimetric experiments on heating reveal that, at 154 °C, the original mixture between ferroelectric δ-phase and paraelectric α-phase transits to a system with only this latter phase in the crystalline fraction. A gradual and slight increment of amorphous fraction up to the melting at 161 °C is also observed. The existence of δ-phase is corroborated by the occurrence of a broad maximum around 154 °C in dielectric permittivity measurements, as well as the hysteresis loops observed at room temperature. These results suggest a wide thermal window for a stable δ-phase, between room temperature and 154 °C, a subsequent transition into α-phase and the corresponding melting at 161 °C. The broad dielectric maximum observed around 154 °C in dielectric and calorimetric measurements, can be associated with a diffuse ferroelectric-paraelectric transition.
format	article
author	O. García-Zaldívar T. Escamilla-Díaz M. Ramírez-Cardona M. A. Hernández-Landaverde R. Ramírez-Bon J. M. Yañez-Limón F. Calderón-Piñar
author_facet	O. García-Zaldívar T. Escamilla-Díaz M. Ramírez-Cardona M. A. Hernández-Landaverde R. Ramírez-Bon J. M. Yañez-Limón F. Calderón-Piñar
author_sort	O. García-Zaldívar
title	Ferroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF
title_short	Ferroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF
title_full	Ferroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF
title_fullStr	Ferroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF
title_full_unstemmed	Ferroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF
title_sort	ferroelectric-paraelectric transition in a membrane with quenched-induced δ-phase of pvdf
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c1d0f51e5a9741f18c9009c6e764de48
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Ferroelectric-Paraelectric Transition In A Membrane With Quenched-Induced δ-Phase Of PVDF

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