Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films

Detalhes bibliográficos
Autor(a) principal: Reis, S. P. [UNESP]
Data de Publicação: 2019
Outros Autores: Araujo, E. B. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1080/00150193.2019.1621695
http://hdl.handle.net/11449/186087
Resumo: Complex impedance and electric modulus spectroscopies were used to investigate the dielectric relaxation and conductivity of random oriented BiFeO3 thin films. Thermally activated charge transport models yielded activation energies of eV, which is consistent with an electrical conduction dominated by oxygen vacancies. The non-Debye behavior of impedance and electric modulus relaxations were modeled by Cole-Cole functions. Results suggest a coexistence of components from both long-range and localized relaxation in the studied BiFeO3 films dominated by grain boundaries. The dielectric relaxation induced by electric field does not follow the Arrhenius formalism.
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spelling Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin filmsBismuth ferritethin filmsdielectric relaxationComplex impedance and electric modulus spectroscopies were used to investigate the dielectric relaxation and conductivity of random oriented BiFeO3 thin films. Thermally activated charge transport models yielded activation energies of eV, which is consistent with an electrical conduction dominated by oxygen vacancies. The non-Debye behavior of impedance and electric modulus relaxations were modeled by Cole-Cole functions. Results suggest a coexistence of components from both long-range and localized relaxation in the studied BiFeO3 films dominated by grain boundaries. The dielectric relaxation induced by electric field does not follow the Arrhenius formalism.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Sao Paulo State Univ, Dept Chem & Phys, Ilha Solteira, BrazilSao Paulo State Univ, Dept Chem & Phys, Ilha Solteira, BrazilCNPq: 304604/2015-1CNPq: 400677/2014-8FAPESP: 2017/13769-1Taylor & Francis LtdUniversidade Estadual Paulista (Unesp)Reis, S. P. [UNESP]Araujo, E. B. [UNESP]2019-10-04T12:41:10Z2019-10-04T12:41:10Z2019-06-11info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article111-118http://dx.doi.org/10.1080/00150193.2019.1621695Ferroelectrics. Abingdon: Taylor & Francis Ltd, v. 545, n. 1, p. 111-118, 2019.0015-0193http://hdl.handle.net/11449/18608710.1080/00150193.2019.1621695WOS:000482905400014Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFerroelectricsinfo:eu-repo/semantics/openAccess2021-10-22T21:10:05Zoai:repositorio.unesp.br:11449/186087Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T21:10:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films
title Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films
spellingShingle Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films
Reis, S. P. [UNESP]
Bismuth ferrite
thin films
dielectric relaxation
title_short Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films
title_full Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films
title_fullStr Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films
title_full_unstemmed Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films
title_sort Dielectric relaxation and electrical conductivity of random oriented BiFeO3 thin films
author Reis, S. P. [UNESP]
author_facet Reis, S. P. [UNESP]
Araujo, E. B. [UNESP]
author_role author
author2 Araujo, E. B. [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Reis, S. P. [UNESP]
Araujo, E. B. [UNESP]
dc.subject.por.fl_str_mv Bismuth ferrite
thin films
dielectric relaxation
topic Bismuth ferrite
thin films
dielectric relaxation
description Complex impedance and electric modulus spectroscopies were used to investigate the dielectric relaxation and conductivity of random oriented BiFeO3 thin films. Thermally activated charge transport models yielded activation energies of eV, which is consistent with an electrical conduction dominated by oxygen vacancies. The non-Debye behavior of impedance and electric modulus relaxations were modeled by Cole-Cole functions. Results suggest a coexistence of components from both long-range and localized relaxation in the studied BiFeO3 films dominated by grain boundaries. The dielectric relaxation induced by electric field does not follow the Arrhenius formalism.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-04T12:41:10Z
2019-10-04T12:41:10Z
2019-06-11
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1080/00150193.2019.1621695
Ferroelectrics. Abingdon: Taylor & Francis Ltd, v. 545, n. 1, p. 111-118, 2019.
0015-0193
http://hdl.handle.net/11449/186087
10.1080/00150193.2019.1621695
WOS:000482905400014
url http://dx.doi.org/10.1080/00150193.2019.1621695
http://hdl.handle.net/11449/186087
identifier_str_mv Ferroelectrics. Abingdon: Taylor & Francis Ltd, v. 545, n. 1, p. 111-118, 2019.
0015-0193
10.1080/00150193.2019.1621695
WOS:000482905400014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ferroelectrics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 111-118
dc.publisher.none.fl_str_mv Taylor & Francis Ltd
publisher.none.fl_str_mv Taylor & Francis Ltd
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1799965742047690752

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