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Incorporation of Jahn-Teller Cu(2+) Ions into Magnetoelectric Multiferroic MnWO4: Structural, Magnetic, and Dielectric Permittivity Properties of Mn1-xCuxWO4 (x ≤ 0.25).

hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorPATUREAU, Pascaline
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorJOSSE, Michaël
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorDESSAPT, Rémi
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorMEVELLEC, Jean-Yves
hal.structure.identifierLaboratoire Léon Brillouin [LLB - UMR 12]
dc.contributor.authorPORCHER, Florence
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAGLIONE, Mario
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorDENIARD, Philippe
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorPAYEN, Christophe
dc.date.issued2015
dc.identifier.issn0020-1669
dc.description.abstractEnPolycrystalline samples of Mn1-xCuxWO4 (x ≤ 0.5) have been prepared by a solid-state synthesis as well as from a citrate synthesis at moderate temperature (850 °C). The goal is to study changes in the structural, magnetic, and dielectric properties of magnetoelectric type-II multiferroic MnWO4 caused by replacing Jahn-Teller-inactive Mn(2+) (d(5), S = 5/2) ions with Jahn-Teller-active Cu(2+) (d(9), S = 1/2) ions. Combination of techniques including scanning electron microscopy, powder X-ray and neutron diffraction, and Raman spectroscopy demonstrates that the polycrystalline samples with low copper content 0 ≤ x ≤ 0.25 are solid solution that forms in the monoclinic P2/c space group. Rietveld analyses indicate that Cu atoms substitutes for Mn atoms at the Mn crystallographic site of the MnWO4 structure and suggest random distributions of Jahn-Teller-distorted CuO6 octahedra in the solid solution. Magnetic susceptibility reveals that only 5% of Cu substitution suppresses the nonpolar collinear AF1 antiferromagnetic structure observed in pure MnWO4. Type-II multiferroicity survives a weak Cu substitution rate (x < 0.15). Multiferroic transition temperature and Néel temperature increase as the amount of Cu increases. New trends in some of the magnetic properties and in dielectric behaviors are observed for x = 0.20 and 0.25. Careful analysis of the magnetic susceptibility reveals that the incorporation of Cu into MnWO4 strengthens the overall antiferromagnetic interaction and reduces the magnetic frustration.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enIncorporation of Jahn-Teller Cu(2+) Ions into Magnetoelectric Multiferroic MnWO4: Structural, Magnetic, and Dielectric Permittivity Properties of Mn1-xCuxWO4 (x ≤ 0.25).
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.inorgchem.5b01416
dc.subject.halChimie/Matériaux
bordeaux.journalInorganic Chemistry
bordeaux.page10623-10631
bordeaux.volume54
bordeaux.issue22
bordeaux.peerReviewedoui
hal.identifierhal-01232391
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01232391v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Inorganic%20Chemistry&amp;rft.date=2015&amp;rft.volume=54&amp;rft.issue=22&amp;rft.spage=10623-10631&amp;rft.epage=10623-10631&amp;rft.eissn=0020-1669&amp;rft.issn=0020-1669&amp;rft.au=PATUREAU,%20Pascaline&amp;JOSSE,%20Micha%C3%ABl&amp;DESSAPT,%20R%C3%A9mi&amp;MEVELLEC,%20Jean-Yves&amp;PORCHER,%20Florence&amp;rft.genre=article


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