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Magnetic structure of the ferromagnetic new ternary silicide Nd5CoSi2

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAYER, Charlotte
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGAUDIN, Etienne
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGORSSE, Stéphane
hal.structure.identifierLaboratoire Léon Brillouin [LLB - UMR 12]
dc.contributor.authorPORCHER, Florence
hal.structure.identifierLaboratoire Léon Brillouin [LLB - UMR 12]
dc.contributor.authorANDRÉ, Gilles
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHEVALIER, Bernard
dc.date.issued2012
dc.identifier.issn0953-8984
dc.description.abstractEnNd5CoSi2 was obtained from the elements by arc-melting followed by annealing at 883 K. Its investigation by single-crystal x-ray and neutron powder diffraction shows that this ternary silicide crystallizes as Nd5Si3 in a tetragonal structure deriving from the Cr5B3-type (I4/mcm space group; a = 7.7472(2) and c = 13.5981(5) Å as unit cell parameters). The structural refinements confirm the mixed occupancy on the 8h site between Si and Co atoms, as already observed for Gd5CoSi2. Magnetization and specific heat measurements reveal a ferromagnetic behavior below TC = 55 K for Nd5CoSi2. This magnetic ordering is further evidenced by neutron powder diffraction investigation revealing between 1.8 K and TC a canted ferromagnetic structure in the direction of the c-axis described by a propagation vector k = (0 0 0). At 1.8 K, the two Nd3+ ions carry ordered magnetic moments equal respectively to 1.67(7) and 2.37(7) μB for Nd1 and Nd2; these two moments exhibit a canting angle of θ = 4.3(6)°. This magnetic structure presents some similarities with that reported for Nd5Si3.
dc.language.isoen
dc.publisherIOP Publishing
dc.title.enMagnetic structure of the ferromagnetic new ternary silicide Nd5CoSi2
dc.typeArticle de revue
dc.identifier.doi10.1088/0953-8984/24/13/136001
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Physics: Condensed Matter
bordeaux.page136001 (8p.)
bordeaux.volume24
bordeaux.issue13
bordeaux.peerReviewedoui
hal.identifierhal-00680387
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.itFerromagnetism
dc.subject.itMagnetism
dc.subject.itSilicides
dc.subject.itChemical structure
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00680387v1
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