Cargando…

Depolarization of multidomain ferroelectric materials

Depolarization in ferroelectric materials has been studied since the 1970s, albeit quasi-statically. The dynamics are described by the empirical Merz law, which gives the polarization switching time as a function of electric field, normalized to the so-called activation field. The Merz law has been...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhao, Dong, Lenz, Thomas, Gelinck, Gerwin H., Groen, Pim, Damjanovic, Dragan, de Leeuw, Dago M., Katsouras, Ilias
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560217/
https://www.ncbi.nlm.nih.gov/pubmed/31186422
http://dx.doi.org/10.1038/s41467-019-10530-4
_version_ 1783425926989611008
author Zhao, Dong
Lenz, Thomas
Gelinck, Gerwin H.
Groen, Pim
Damjanovic, Dragan
de Leeuw, Dago M.
Katsouras, Ilias
author_facet Zhao, Dong
Lenz, Thomas
Gelinck, Gerwin H.
Groen, Pim
Damjanovic, Dragan
de Leeuw, Dago M.
Katsouras, Ilias
author_sort Zhao, Dong
collection PubMed
description Depolarization in ferroelectric materials has been studied since the 1970s, albeit quasi-statically. The dynamics are described by the empirical Merz law, which gives the polarization switching time as a function of electric field, normalized to the so-called activation field. The Merz law has been used for decades; its origin as domain-wall depinning has recently been corroborated by molecular dynamics simulations. Here we experimentally investigate domain-wall depinning by measuring the dynamics of depolarization. We find that the boundary between thermodynamically stable and depolarizing regimes can be described by a single constant, P(r)/ε(0)ε(ferro)E(c). Among different multidomain ferroelectric materials the values of coercive field, E(c), dielectric constant, ε(ferro), and remanent polarization, P(r), vary by orders of magnitude; the value for P(r)/ε(0)ε(ferro)E(c) however is comparable, about 15. Using this extracted universal value, we show that the depolarization field is similar to the activation field, which corresponds to the transition from creep to domain-wall flow.
format Online
Article
Text
id pubmed-6560217
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-65602172019-06-21 Depolarization of multidomain ferroelectric materials Zhao, Dong Lenz, Thomas Gelinck, Gerwin H. Groen, Pim Damjanovic, Dragan de Leeuw, Dago M. Katsouras, Ilias Nat Commun Article Depolarization in ferroelectric materials has been studied since the 1970s, albeit quasi-statically. The dynamics are described by the empirical Merz law, which gives the polarization switching time as a function of electric field, normalized to the so-called activation field. The Merz law has been used for decades; its origin as domain-wall depinning has recently been corroborated by molecular dynamics simulations. Here we experimentally investigate domain-wall depinning by measuring the dynamics of depolarization. We find that the boundary between thermodynamically stable and depolarizing regimes can be described by a single constant, P(r)/ε(0)ε(ferro)E(c). Among different multidomain ferroelectric materials the values of coercive field, E(c), dielectric constant, ε(ferro), and remanent polarization, P(r), vary by orders of magnitude; the value for P(r)/ε(0)ε(ferro)E(c) however is comparable, about 15. Using this extracted universal value, we show that the depolarization field is similar to the activation field, which corresponds to the transition from creep to domain-wall flow. Nature Publishing Group UK 2019-06-11 /pmc/articles/PMC6560217/ /pubmed/31186422 http://dx.doi.org/10.1038/s41467-019-10530-4 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhao, Dong
Lenz, Thomas
Gelinck, Gerwin H.
Groen, Pim
Damjanovic, Dragan
de Leeuw, Dago M.
Katsouras, Ilias
Depolarization of multidomain ferroelectric materials
title Depolarization of multidomain ferroelectric materials
title_full Depolarization of multidomain ferroelectric materials
title_fullStr Depolarization of multidomain ferroelectric materials
title_full_unstemmed Depolarization of multidomain ferroelectric materials
title_short Depolarization of multidomain ferroelectric materials
title_sort depolarization of multidomain ferroelectric materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560217/
https://www.ncbi.nlm.nih.gov/pubmed/31186422
http://dx.doi.org/10.1038/s41467-019-10530-4
work_keys_str_mv AT zhaodong depolarizationofmultidomainferroelectricmaterials
AT lenzthomas depolarizationofmultidomainferroelectricmaterials
AT gelinckgerwinh depolarizationofmultidomainferroelectricmaterials
AT groenpim depolarizationofmultidomainferroelectricmaterials
AT damjanovicdragan depolarizationofmultidomainferroelectricmaterials
AT deleeuwdagom depolarizationofmultidomainferroelectricmaterials
AT katsourasilias depolarizationofmultidomainferroelectricmaterials