Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound

The number of magnetoelectric multiferroic materials reported to date is scarce, as magnetic structures that break inversion symmetry and induce an improper ferroelectric polarization typically arise through subtle competition between different magnetic interactions. The (NH 4) 2 FeCl 5 (H 2 O)] com...

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Autores: Rodríguez-Velamazán, J.A., Fabelo, O., Millán, Á., Campo, J., Johnson, R.D., Chapon, L.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:32198
Acceso en línea:http://zaguan.unizar.es/record/32198
Access Level:acceso abierto
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spelling Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compoundRodríguez-Velamazán, J.A.Fabelo, O.Millán, Á.Campo, J.Johnson, R.D.Chapon, L.The number of magnetoelectric multiferroic materials reported to date is scarce, as magnetic structures that break inversion symmetry and induce an improper ferroelectric polarization typically arise through subtle competition between different magnetic interactions. The (NH 4) 2 FeCl 5 (H 2 O)] compound is a rare case where such improper ferroelectricity has been observed in a molecular material. We have used single crystal and powder neutron diffraction to obtain detailed solutions for the crystal and magnetic structures of (NH 4) 2 FeCl 5 (H 2 O)], from which we determined the mechanism of multiferroicity. From the crystal structure analysis, we observed an order-disorder phase transition related to the ordering of the ammonium counterion. We have determined the magnetic structure below T N, at 2 €‰K and zero magnetic field, which corresponds to a cycloidal spin arrangement with magnetic moments contained in the ac-plane, propagating parallel to the c-axis. The observed ferroelectricity can be explained, from the obtained magnetic structure, via the inverse Dzyaloshinskii-Moriya mechanism.2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/32198reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/ES/MICINN/MAT2011-27233-C02-02info:eu-repo/grantAgreement/ES/MICINN/MAT2010-16981info:eu-repo/semantics/openAccessoai:zaguan.unizar.es:321982026-05-29T13:59:51Z
dc.title.none.fl_str_mv Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound
title Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound
spellingShingle Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound
Rodríguez-Velamazán, J.A.
title_short Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound
title_full Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound
title_fullStr Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound
title_full_unstemmed Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound
title_sort Magnetically-induced ferroelectricity in the (ND 4) 2 [FeCl 5 (D 2 O)] molecular compound
dc.creator.none.fl_str_mv Rodríguez-Velamazán, J.A.
Fabelo, O.
Millán, Á.
Campo, J.
Johnson, R.D.
Chapon, L.
author Rodríguez-Velamazán, J.A.
author_facet Rodríguez-Velamazán, J.A.
Fabelo, O.
Millán, Á.
Campo, J.
Johnson, R.D.
Chapon, L.
author_role author
author2 Fabelo, O.
Millán, Á.
Campo, J.
Johnson, R.D.
Chapon, L.
author2_role author
author
author
author
author
description The number of magnetoelectric multiferroic materials reported to date is scarce, as magnetic structures that break inversion symmetry and induce an improper ferroelectric polarization typically arise through subtle competition between different magnetic interactions. The (NH 4) 2 FeCl 5 (H 2 O)] compound is a rare case where such improper ferroelectricity has been observed in a molecular material. We have used single crystal and powder neutron diffraction to obtain detailed solutions for the crystal and magnetic structures of (NH 4) 2 FeCl 5 (H 2 O)], from which we determined the mechanism of multiferroicity. From the crystal structure analysis, we observed an order-disorder phase transition related to the ordering of the ammonium counterion. We have determined the magnetic structure below T N, at 2 €‰K and zero magnetic field, which corresponds to a cycloidal spin arrangement with magnetic moments contained in the ac-plane, propagating parallel to the c-axis. The observed ferroelectricity can be explained, from the obtained magnetic structure, via the inverse Dzyaloshinskii-Moriya mechanism.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://zaguan.unizar.es/record/32198
url http://zaguan.unizar.es/record/32198
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/MICINN/MAT2011-27233-C02-02
info:eu-repo/grantAgreement/ES/MICINN/MAT2010-16981
dc.rights.none.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
publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301629

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