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Effect of Nonmagnetic Substituents Mg and Zn on the Phase Competition in the Multiferroic Antiferromagnet MnWO<sub> 4</sub>

hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorMEDDAR, L.
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.authorDENIARD, Philippe
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorLA, C.
hal.structure.identifierLaboratoire Léon Brillouin [LLB - UMR 12]
dc.contributor.authorANDRE, G.
hal.structure.identifierLaboratoire Léon Brillouin [LLB - UMR 12]
dc.contributor.authorDAMAY, F.
hal.structure.identifierInstitute of Physics
dc.contributor.authorPETRICEK, Vaclav
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorJOBIC, Stéphane
hal.structure.identifierDepartment of Chemistry, North Carolina Raleigh
dc.contributor.authorWHANGBO, Myung-Hwan
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.authorPAYEN, Christophe
dc.date.issued2009
dc.identifier.issn0897-4756
dc.description.abstractEnThe effects of substituting nonmagnetic Mg2þ and Zn2þ ions for the Mn2þ (S=5/2) ions on the structural, magnetic, and dielectric properties of the multiferroic frustrated antiferromagnetMnWO4 were investigated. Polycrystalline samples ofMn1-xMgxWO4 andMn1-xZnxWO4 (0exe0.3) solid solutions were prepared via a solid-state route and characterized via X-ray and neutron diffraction, magnetization, and dielectric permittivity measurements. Mg and Zn substitutions result in very similar effects. The N eel temperature (TN), the AF3-to-AF2 magnetic phase-transition temperature (T2), and the critical ferroelectric temperature (Tc=T2) of MnWO4 are reduced upon nonmagnetic doping. At the lowest temperature (T=1.5 K), the incommensurate magnetic structure for x(Mg)=0.15 and x(Zn)=0.15 corresponds to either a sinusoidal spin arrangement or an elliptical spin-spiral phase similar to the polar AF2 structure observed in MnWO4. These findings were discussed by considering the effects of the Mg and Zn substitutions on the crystal lattice and on the spin exchange network of MnWO4.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.title.enEffect of Nonmagnetic Substituents Mg and Zn on the Phase Competition in the Multiferroic Antiferromagnet MnWO<sub> 4</sub>
dc.typeArticle de revue
dc.identifier.doi10.1021/cm9021358
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
dc.identifier.arxiv1012.0251
bordeaux.journalChemistry of Materials
bordeaux.page5203-5214
bordeaux.volume21
bordeaux.issue21
bordeaux.peerReviewedoui
hal.identifierhal-00433237
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00433237v1
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