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Increasing the phase-transition temperatures in spin-frustrated multiferroic MnWO4 by Mo doping

hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorMEDDAR, Lynda
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorJOSSE, Michaël
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.authorGUIET, Amandine
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorLA, Carole
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorDENIARD, Philippe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDECOURT, Rodolphe
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorLEE, Changhoon
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorTIAN, Chuan
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorJOBIC, Stéphane
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorWHANGBO, Myung-Hwan
hal.structure.identifierInstitut des Matériaux Jean Rouxel [IMN]
dc.contributor.authorPAYEN, Christophe
dc.date.issued2012
dc.identifier.issn0897-4756
dc.description.abstractEnCeramic samples of MnW1-xMoxO4 (x ≤ 0.3) solid solution were prepared by a solid-state route with the goal of increasing the magnitude of the spin-exchange couplings among the Mn2+ ions in the spin spiral multiferroic MnWO4. Samples were characterized by X-ray diffraction, optical spectroscopy, magnetization, and dielectric permittivity measurements. It was observed that the Néel temperature TN, the spin spiral ordering temperature TM2, and the ferroelectric phase-transition temperature TFE2 of MnWO4 increased upon the nonmagnetic substitution of Mo6+ for W6+. Like pure MnWO4, the ferroelectric critical temperature TFE2(x) coincides with the magnetic ordering temperature TM2(x). A density functional analysis of the spin-exchange interactions for a hypothetical MnMoO4 that is isostructural with MnWO4 suggests that Mo substitution increases the strength of the spin-exchange couplings among Mn2+ in the vicinity of a Mo6+ ion. Our study shows that the Mo-doped MnW1-xMoxO4 (x ≤ 0.3) compounds are spin-frustrated materials that have higher magnetic and ferroelectric phase-transition temperatures than does pure MnWO4.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enMnWO4
dc.subject.enMultiferroic
dc.subject.enSpin frustration
dc.subject.enMagnetic exchange
dc.subject.enInductive effect
dc.title.enIncreasing the phase-transition temperatures in spin-frustrated multiferroic MnWO4 by Mo doping
dc.typeArticle de revue
dc.identifier.doi10.1021/cm2031653
dc.subject.halChimie/Matériaux
bordeaux.journalChemistry of Materials
bordeaux.page353-360
bordeaux.volume24
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00663463
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00663463v1
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