Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure

NaPrFeWO6 and NaSmFeWO6 have been synthesized as polycrystalline powders by means of a sol-gel route. Both samples adopt a noncentrosymmetric structure derived from the simple perovskite ABO3 and characterized by a layered ordering of A-site atoms (Na and rare earth) and a rock-salt ordering of B-si...

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Autores: Blasco, Javier, Rodríguez-Velamazán, J. A., Subías, Gloria, García Muñoz, Josep Lluís, Stankiewicz, Jolanta, García, Joaquín
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/204649
Acceso en línea:http://hdl.handle.net/10261/204649
Access Level:acceso abierto
Palabra clave:Polar oxides
Doubly ordered perovskites
Multiferroics
Neutron diffraction
Magnetic ordering
Depletion layers
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spelling Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structureBlasco, JavierRodríguez-Velamazán, J. A.Subías, GloriaGarcía Muñoz, Josep LluísStankiewicz, JolantaGarcía, JoaquínPolar oxidesDoubly ordered perovskitesMultiferroicsNeutron diffractionMagnetic orderingDepletion layersNaPrFeWO6 and NaSmFeWO6 have been synthesized as polycrystalline powders by means of a sol-gel route. Both samples adopt a noncentrosymmetric structure derived from the simple perovskite ABO3 and characterized by a layered ordering of A-site atoms (Na and rare earth) and a rock-salt ordering of B-site atoms (Fe and W) as deduced from x-ray and neutron powder diffraction techniques. Magnetization measurements revealed antiferromagnetic ordering below TN ≈23 K in both compounds but weak spontaneous magnetization is observed in the hysteresis loops of the samples above and below TN revealing a parasitic ferromagnetic component that comes from minor ferromagnetic impurities. The magnetic structure of NaPrFeWO6 is formed by two antiferromagnetic sublattices (rare earth and Fe) that follow the same propagation vector k = (½, 0, ½). The magnetic structure is purely collinear with the moments oriented along the b-axis. It presents competitive magnetic interactions and reduced ordered moments at low temperatures. The rare earth moments in the zig-zag chains running along a (parallel to the ab plane) are ordered following a sequence typical of an E-type arrangement (up-up-down-down). Each Fe2+ atom has four nearest Pr3+ neighbors and it is coupled antiferromagnetically to three of them and ferromagnetically to the fourth one. Strong neutron absorption from Sm atoms hinders obtaining reliable neutron patterns of NaSmFeWO6 for Rietveld analysis but the comparison of neutron patterns above and below TN detected the same magnetic peaks indicating a similar magnetic structure. Dielectric measurements are compatible with a paraelectric system with a strong Maxwell-Wagner contribution from depletion layers and electrical properties are dominated by leakage currents.Authors would like to acknowledge the use of Servicio General de Apoyo a la Investigación from Universidad de Zaragoza. For financial support, we thank the Spanish Ministerio de Ciencia, Innovación y Universidades (Projects No. MAT2015-68760-C2-1, MAT2015-68760-C2-2, RTI2018-098537-B-C21 and RTI2018-098537-B-C22 cofunded by ERDF from EU, “Severo Ochoa” Programme (SEV- 2015-0496)) and Diputación General de Aragón (Project E12-17R).Peer reviewedElsevierUniversidad de ZaragozaMinisterio de Ciencia, Innovación y Universidades (España)Diputación General de AragónConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/204649reponame: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##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2015-68760-C2-1-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2015-68760-C2-2-PMICIU/ICTI2017-2020/RTI2018-098537-B-C21MICIU/ICTI2017-2020/RTI2018-098537-B-C22info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/SEV-2015-0496RTI2018-098537-B-C21/AEI/10.13039/501100011033RTI2018-098537-B-C22/AEI/10.13039/501100011033http://dx.doi.org/10.1016/j.actamat.2019.06.045Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2046492026-05-22T06:33:51Z
dc.title.none.fl_str_mv Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure
title Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure
spellingShingle Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure
Blasco, Javier
Polar oxides
Doubly ordered perovskites
Multiferroics
Neutron diffraction
Magnetic ordering
Depletion layers
title_short Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure
title_full Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure
title_fullStr Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure
title_full_unstemmed Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure
title_sort Spin ordering and physical properties of NaPrFeWO6 and NaSmFeWO6 with polar double perovskite structure
dc.creator.none.fl_str_mv Blasco, Javier
Rodríguez-Velamazán, J. A.
Subías, Gloria
García Muñoz, Josep Lluís
Stankiewicz, Jolanta
García, Joaquín
author Blasco, Javier
author_facet Blasco, Javier
Rodríguez-Velamazán, J. A.
Subías, Gloria
García Muñoz, Josep Lluís
Stankiewicz, Jolanta
García, Joaquín
author_role author
author2 Rodríguez-Velamazán, J. A.
Subías, Gloria
García Muñoz, Josep Lluís
Stankiewicz, Jolanta
García, Joaquín
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Zaragoza
Ministerio de Ciencia, Innovación y Universidades (España)
Diputación General de Aragón
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Polar oxides
Doubly ordered perovskites
Multiferroics
Neutron diffraction
Magnetic ordering
Depletion layers
topic Polar oxides
Doubly ordered perovskites
Multiferroics
Neutron diffraction
Magnetic ordering
Depletion layers
description NaPrFeWO6 and NaSmFeWO6 have been synthesized as polycrystalline powders by means of a sol-gel route. Both samples adopt a noncentrosymmetric structure derived from the simple perovskite ABO3 and characterized by a layered ordering of A-site atoms (Na and rare earth) and a rock-salt ordering of B-site atoms (Fe and W) as deduced from x-ray and neutron powder diffraction techniques. Magnetization measurements revealed antiferromagnetic ordering below TN ≈23 K in both compounds but weak spontaneous magnetization is observed in the hysteresis loops of the samples above and below TN revealing a parasitic ferromagnetic component that comes from minor ferromagnetic impurities. The magnetic structure of NaPrFeWO6 is formed by two antiferromagnetic sublattices (rare earth and Fe) that follow the same propagation vector k = (½, 0, ½). The magnetic structure is purely collinear with the moments oriented along the b-axis. It presents competitive magnetic interactions and reduced ordered moments at low temperatures. The rare earth moments in the zig-zag chains running along a (parallel to the ab plane) are ordered following a sequence typical of an E-type arrangement (up-up-down-down). Each Fe2+ atom has four nearest Pr3+ neighbors and it is coupled antiferromagnetically to three of them and ferromagnetically to the fourth one. Strong neutron absorption from Sm atoms hinders obtaining reliable neutron patterns of NaSmFeWO6 for Rietveld analysis but the comparison of neutron patterns above and below TN detected the same magnetic peaks indicating a similar magnetic structure. Dielectric measurements are compatible with a paraelectric system with a strong Maxwell-Wagner contribution from depletion layers and electrical properties are dominated by leakage currents.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/204649
url http://hdl.handle.net/10261/204649
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
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#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
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info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2015-68760-C2-1-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2015-68760-C2-2-P
MICIU/ICTI2017-2020/RTI2018-098537-B-C21
MICIU/ICTI2017-2020/RTI2018-098537-B-C22
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/SEV-2015-0496
RTI2018-098537-B-C21/AEI/10.13039/501100011033
RTI2018-098537-B-C22/AEI/10.13039/501100011033
http://dx.doi.org/10.1016/j.actamat.2019.06.045
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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)
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