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hal.structure.identifierInstitut d'électronique fondamentale [IEF]
hal.structure.identifierLaboratoire de Physico-Chimie de l'État Solide [CHIMSOL]
dc.contributor.authorVELÁZQUEZ, Matias
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASSAT, Jean-Marc.
hal.structure.identifierInstitut d'électronique fondamentale [IEF]
dc.contributor.authorRENARD, Jean-Pierre
hal.structure.identifierInstitut d'électronique fondamentale [IEF]
dc.contributor.authorDUPAS, C.
hal.structure.identifierLaboratoire de Physico-Chimie de l'État Solide [CHIMSOL]
dc.contributor.authorREVCOLEVSCHI, Alexandre
dc.date.issued2002
dc.identifier.issn0953-8984
dc.description.abstractEnHigh-quality single crystals of La1.2Sr1.8 −y Cay Mn2O7 (0 ≤ y ≤ 0.2) were studied by means of electrical resistivity and magnetoresistance measurements. They exhibit a phase transition to a metallic ferromagnetic state at low temperature and strongly anisotropic electronic transport properties, which result from their lamellar structure. The temperature range of the resistivity measurements is extended up to about 1000 K, which allows us to discriminate between different theoretical models. In addition, an accurate comparison of parallel and perpendicular resistivity is carried out in order to reveal the effect of the two-dimensional magnetic correlations. The effect of disorder achieved by substitution of Ca2+, of smaller ionic radius, for Sr2+ is also investigated in detail.
dc.language.isoen
dc.publisherIOP Publishing
dc.typeArticle de revue
dc.identifier.doi10.1088/0953-8984/14/26/307
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Physics: Condensed Matter
bordeaux.page6667-6674
bordeaux.volume14
bordeaux.issue26
bordeaux.peerReviewedoui
hal.identifierhal-00818029
hal.version1
hal.popularnon
hal.audienceInternationale
dc.title.itMagnetotransport in the La1.2(Sr, Ca)1.8Mn2O7 solid solution
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00818029v1
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