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Magnetic exchange interactions and supertransferred hyperfine fields at 119Sn probe atoms in CaCu3Mn4O12

hal.structure.identifierLomonosov Moscow State University [MSU]
dc.contributor.authorPRESNIAKOV, Igor A.
hal.structure.identifierLomonosov Moscow State University [MSU]
dc.contributor.authorRUSAKOV, Viyacheslav S.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDEMAZEAU, Gérard
hal.structure.identifierLomonosov Moscow State University [MSU]
dc.contributor.authorSOBOLEV, Alexey V.
hal.structure.identifierLomonosov Moscow State University [MSU]
dc.contributor.authorGLAZKOVA, Ya. S.
hal.structure.identifierLomonosov Moscow State University [MSU]
dc.contributor.authorGUBAIDULINA, Tatyana V.
hal.structure.identifierLomonosov Moscow State University [MSU]
dc.contributor.authorGAPOCHKA, M. A.
hal.structure.identifierLomonosov Moscow State University [MSU]
dc.contributor.authorVOLKOVA, O. S.
hal.structure.identifierLomonosov Moscow State University [MSU]
dc.contributor.authorVASILIEV, A. N.
dc.date.issued2012
dc.identifier.issn1098-0121
dc.description.abstractEnThe double manganite CaCu3Mn4O12 doped with 119Sn atoms (∼1 at.% with respect to manganese atoms) was studied by use of Mössbauer spectroscopy. Formally tetravalent Sn4+ ions substitute for isovalent manganese ions in the octahedral (Mn4+O6) polyhedra. The covalency effects on the magnetic interactions like superexchange in Cu2+-O-Mn4+ and Mn4+-O-Mn4+ bonds and supertransferred hyperfine interactions of the 119Sn probe atoms in the manganite structure are discussed. Using a semiquantitative nearest-neighbor cluster model relating the hyperfine magnetic field on the 119Sn nuclei (HSn = 105 kOe at T = 77 K) to covalency parameters and angle characterizing the Sn-O-M (M = Cu, Mn) bonds, it has been shown how such an analysis of supertransferred hyperfine interactions of tin probe ions can get fruitful information about strength and sign of the superexchange interactions between Mn4+ and Cu2+ magnetic ions. A consistent description of the results in the framework of the Weiss molecular field model considering the specific local environment of tin atoms has made it possible to estimate exchange integrals: JCuMn = −51.1 ± 0.3 K and JMnMn = −0.6 ± 0.2 K.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.subject.enMagnetism
dc.subject.enMössbauer spectroscopy
dc.subject.enInorganic compounds
dc.title.enMagnetic exchange interactions and supertransferred hyperfine fields at 119Sn probe atoms in CaCu3Mn4O12
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevB.85.024406
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page024406
bordeaux.volume85
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00663175
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00663175v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20B:%20Condensed%20Matter%20and%20Materials%20Physics%20(1998-2015)&rft.date=2012&rft.volume=85&rft.issue=2&rft.spage=024406&rft.epage=024406&rft.eissn=1098-0121&rft.issn=1098-0121&rft.au=PRESNIAKOV,%20Igor%20A.&RUSAKOV,%20Viyacheslav%20S.&DEMAZEAU,%20G%C3%A9rard&SOBOLEV,%20Alexey%20V.&GLAZKOVA,%20Ya.%20S.&rft.genre=article


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