Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite

Detalhes bibliográficos
Autor(a) principal: Abdallah, F. B.
Data de Publicação: 2018
Outros Autores: Benali, A., Triki, M., Dhahri, E., Graça, M. P. F., Valente, M. A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/37066
Resumo: The effect of annealing temperature on the structure, morphology and dielectric properties of La0.75Ba0.25FeO3 compound prepared by the sol-gel method was investigated. The increase of the annealing temperature from 900 to 1100 °C, promotes an increase of the average grain size value. Two dielectric relaxations are detected using the dielectric modulus formalism, attributed to grain and grain boundary relaxations. This behavior was confirmed by both Nyquist and Argand's plots of dielectric impedance and Modulus results at different measuring temperatures. The ac conductivity could be described by Jonscher's power law revealing the presence of both overlapping large polaron tunneling and non-overlapping small polaron tunneling mechanisms.
id RCAP_954aa9b01c763a6a6c9e6421cabf5c1a
oai_identifier_str oai:ria.ua.pt:10773/37066
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskitePerovskiteSol-gelImpedance spectroscopyAnnealing effectAc conductivityThe effect of annealing temperature on the structure, morphology and dielectric properties of La0.75Ba0.25FeO3 compound prepared by the sol-gel method was investigated. The increase of the annealing temperature from 900 to 1100 °C, promotes an increase of the average grain size value. Two dielectric relaxations are detected using the dielectric modulus formalism, attributed to grain and grain boundary relaxations. This behavior was confirmed by both Nyquist and Argand's plots of dielectric impedance and Modulus results at different measuring temperatures. The ac conductivity could be described by Jonscher's power law revealing the presence of both overlapping large polaron tunneling and non-overlapping small polaron tunneling mechanisms.Elsevier2023-04-14T14:48:31Z2018-05-01T00:00:00Z2018-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37066eng0749-603610.1016/j.spmi.2018.03.048Abdallah, F. B.Benali, A.Triki, M.Dhahri, E.Graça, M. P. F.Valente, M. A.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:11:29Zoai:ria.ua.pt:10773/37066Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:07:43.650733Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
title Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
spellingShingle Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
Abdallah, F. B.
Perovskite
Sol-gel
Impedance spectroscopy
Annealing effect
Ac conductivity
title_short Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
title_full Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
title_fullStr Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
title_full_unstemmed Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
title_sort Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
author Abdallah, F. B.
author_facet Abdallah, F. B.
Benali, A.
Triki, M.
Dhahri, E.
Graça, M. P. F.
Valente, M. A.
author_role author
author2 Benali, A.
Triki, M.
Dhahri, E.
Graça, M. P. F.
Valente, M. A.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Abdallah, F. B.
Benali, A.
Triki, M.
Dhahri, E.
Graça, M. P. F.
Valente, M. A.
dc.subject.por.fl_str_mv Perovskite
Sol-gel
Impedance spectroscopy
Annealing effect
Ac conductivity
topic Perovskite
Sol-gel
Impedance spectroscopy
Annealing effect
Ac conductivity
description The effect of annealing temperature on the structure, morphology and dielectric properties of La0.75Ba0.25FeO3 compound prepared by the sol-gel method was investigated. The increase of the annealing temperature from 900 to 1100 °C, promotes an increase of the average grain size value. Two dielectric relaxations are detected using the dielectric modulus formalism, attributed to grain and grain boundary relaxations. This behavior was confirmed by both Nyquist and Argand's plots of dielectric impedance and Modulus results at different measuring temperatures. The ac conductivity could be described by Jonscher's power law revealing the presence of both overlapping large polaron tunneling and non-overlapping small polaron tunneling mechanisms.
publishDate 2018
dc.date.none.fl_str_mv 2018-05-01T00:00:00Z
2018-05
2023-04-14T14:48:31Z
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://hdl.handle.net/10773/37066
url http://hdl.handle.net/10773/37066
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0749-6036
10.1016/j.spmi.2018.03.048
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799137731669917696

Registros relacionados