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dc.contributor.authorLawes, G.
dc.contributor.authorHarris, A.B.
dc.contributor.authorKimura, T.
dc.contributor.authorRogado, N.
dc.contributor.authorCava, R.J.
dc.contributor.authorAharony, A.
dc.contributor.authorEntin-Wohlman, O.
dc.contributor.authorYildirim, T.
dc.contributor.authorKenzelmann, M.
dc.contributor.authorBroholm, C.
dc.contributor.authorRamirez, A.P.
dc.date.accessioned2010-01-11T18:54:46Z
dc.date.available2010-01-11T18:54:46Z
dc.date.issued2005-08-19
dc.identifier.citationPhysical Review Letters 19 Aug. 2005, vol.95, no.8, pp. 087205/1-en
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33767
dc.description.abstractWe show that long-range ferroelectric and incommensurate magnetic order appear simultaneously in a single phase transition in Ni3V2O8. The temperature and magnetic-field dependence of the spontaneous polarization show a strong coupling between magnetic and ferroelectric orders. We determine the magnetic symmetry using Landau theory for continuous phase transitions, which shows that the spin structure alone can break spatial inversion symmetry leading to ferroelectric order. This phenomenological theory explains our experimental observation that the spontaneous polarization is restricted to lie along the crystal b axis and predicts that the magnitude should be proportional to a magnetic order parameter.en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.subjectLandau theoryen
dc.subjectspin structureen
dc.subjectspatial inversion symmetryen
dc.subjectmagnetic-field dependenceen
dc.subjecttemperature dependenceen
dc.subjectsingle phase transitionen
dc.subjectincommensurate magnetic orderen
dc.subjectlong-range ferroelectric orderen
dc.subjectphenomenological theoren
dc.subjectmagnetic order parameteren
dc.subjectmagnetic transitionsen
dc.subjectdielectric polarizationen
dc.subjectferroelectric materialsen
dc.subjectcommensurate-incommensurate transformationsen
dc.subjectNi3V2O8en
dc.titleMagnetically driven ferroelectric order in Ni3V2O8en
dc.typeArticleen


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