Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds

[EN] Aurivillius layered oxides with general formula (Bi2O2)(Am-1BmO3m+1) stand out among room-temperature magnetoelectric multiferroics for their large magnetization. However, despite extensive research, there is an obvious lack of understanding of their magnetism. The chemical design strategy for...

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Autores: Algueró, Miguel, Pérez del Real, Rafael, Amorín, Harvey, Castro, Alicia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/288098
Acceso en línea:http://hdl.handle.net/10261/288098
Access Level:acceso abierto
Palabra clave:Dielectric properties
Perovskites
Ferroelectric materials
Multiferroics
Magnetism
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spelling Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compoundsAlgueró, MiguelPérez del Real, RafaelAmorín, HarveyCastro, AliciaDielectric propertiesPerovskitesFerroelectric materialsMultiferroicsMagnetism[EN] Aurivillius layered oxides with general formula (Bi2O2)(Am-1BmO3m+1) stand out among room-temperature magnetoelectric multiferroics for their large magnetization. However, despite extensive research, there is an obvious lack of understanding of their magnetism. The chemical design strategy for obtaining multiferroism involves the incorporation of M3+ magnetic cations at the B-site of well-known ferroelectric compounds such as Bi4Ti3O12 (m = 3). We report here a study of the magnetism and dielectric properties of Aurivillius Bi4Ti3 - 2xNbxFexO12 phases with x ≥ 1 up to 1.2, which correspond to magnetic cation fractions at the B site between 0.33 and 0.4 above the threshold for percolation. This is a three-layer system, less prone to the formation of intergrowths, which nominally contains Fe3+ as single magnetic species. Despite that, a rich phenomenology is uncovered. Coexisting magnetic orders are present in the Aurivillius compounds, and a Morin-like transition takes place at low temperatures. The dielectric characterization does not show any associated anomaly that could indicate a polymorphic phase transition but the appearance of relaxor-like characteristics. Possible scenarios are discussed, which involve the presence of Fe2+, cation partitioning between nonequivalent B-sites, and the development of polar nanodomains within a ferroelectric phase at a spin reorientation transition.Research funded by Spanish MICINN through Project No. MAT2017-88788-R. Technical support by Ms. I. Martínez at ICMM-CSIC was also recognized. Part of the FEG-SEM experiments were carried out as service from the MiNa Laboratory at IMN, which acknowledges funding from CM (Project No. S2018/NMT-4291 TEC2SPACE), MINECO (Project No. CSIC13-4E-1794), and EU (FEDER, FSE)Peer reviewedAmerican Institute of PhysicsMinisterio de Ciencia e Innovación (España)Comunidad de MadridMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320222023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/288098reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-88788-Rinfo:eu-repo/grantAgreement/CM/S2018/NMT-4291-TEC2SPACEinfo:eu-repo/grantAgreement/MINECO//CSIC13-4E-1794http://dx.doi.org/10.1063/5.0097079Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2880982026-05-22T06:33:51Z
dc.title.none.fl_str_mv Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds
title Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds
spellingShingle Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds
Algueró, Miguel
Dielectric properties
Perovskites
Ferroelectric materials
Multiferroics
Magnetism
title_short Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds
title_full Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds
title_fullStr Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds
title_full_unstemmed Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds
title_sort Coexisting magnetic orders and concomitant Morin-like transition and relaxor behavior in multiferroic Aurivillius Bi4Ti3 - 2xNbxFexO12compounds
dc.creator.none.fl_str_mv Algueró, Miguel
Pérez del Real, Rafael
Amorín, Harvey
Castro, Alicia
author Algueró, Miguel
author_facet Algueró, Miguel
Pérez del Real, Rafael
Amorín, Harvey
Castro, Alicia
author_role author
author2 Pérez del Real, Rafael
Amorín, Harvey
Castro, Alicia
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Comunidad de Madrid
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Dielectric properties
Perovskites
Ferroelectric materials
Multiferroics
Magnetism
topic Dielectric properties
Perovskites
Ferroelectric materials
Multiferroics
Magnetism
description [EN] Aurivillius layered oxides with general formula (Bi2O2)(Am-1BmO3m+1) stand out among room-temperature magnetoelectric multiferroics for their large magnetization. However, despite extensive research, there is an obvious lack of understanding of their magnetism. The chemical design strategy for obtaining multiferroism involves the incorporation of M3+ magnetic cations at the B-site of well-known ferroelectric compounds such as Bi4Ti3O12 (m = 3). We report here a study of the magnetism and dielectric properties of Aurivillius Bi4Ti3 - 2xNbxFexO12 phases with x ≥ 1 up to 1.2, which correspond to magnetic cation fractions at the B site between 0.33 and 0.4 above the threshold for percolation. This is a three-layer system, less prone to the formation of intergrowths, which nominally contains Fe3+ as single magnetic species. Despite that, a rich phenomenology is uncovered. Coexisting magnetic orders are present in the Aurivillius compounds, and a Morin-like transition takes place at low temperatures. The dielectric characterization does not show any associated anomaly that could indicate a polymorphic phase transition but the appearance of relaxor-like characteristics. Possible scenarios are discussed, which involve the presence of Fe2+, cation partitioning between nonequivalent B-sites, and the development of polar nanodomains within a ferroelectric phase at a spin reorientation transition.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/288098
url http://hdl.handle.net/10261/288098
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2017-88788-R
info:eu-repo/grantAgreement/CM/S2018/NMT-4291-TEC2SPACE
info:eu-repo/grantAgreement/MINECO//CSIC13-4E-1794
http://dx.doi.org/10.1063/5.0097079
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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