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Metal-insulator transitions and magnetic ordered states in oxygen-depleted manganites

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dc.contributor.authorLisboa Filho, Paulo Noronha [UNESP]
dc.contributor.authorBaring, L. A.
dc.contributor.authorWalmsley, L.
dc.contributor.authorBahout, M.
dc.contributor.authorBarahona, P.
dc.contributor.authorPena, O.
dc.contributor.authorMoure, C.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Rennes 1
dc.contributor.institutionCSIC
dc.date.accessioned2014-05-20T15:20:27Z
dc.date.available2014-05-20T15:20:27Z
dc.date.issued2006-05-01
dc.description.abstractThe use of AC/DC magnetic susceptibility and impedance measurements to detect oxygen depletion effects in La0.7Ca0.3MnO3 +/-delta and NiMn2O4+delta spinel-type compounds is reported. For the NiMn2O4, for which no Mn4+ was found, three superposed Debye relaxations were observed in the range 260-180 K. Otherwise, in La0.7Ca0.3MnO3, the argon annealed has contributed to a decrease in T-C, but the amount of Mn4+ is still too high to allow the observation of a relaxation in this frequency window. (c) 2006 Elsevier B.V. All rights reserved.en
dc.description.affiliationUNESP, Dept Fis, Bauru, SP, Brazil
dc.description.affiliationUNESP, Dept Fis, Rio Claro, SP, Brazil
dc.description.affiliationUniv Rennes 1, Inst Chim Rennes, CNRS, UMR 6511,LCSIM, Rennes, France
dc.description.affiliationCSIC, Inst Ceram & Vidrio, E-28049 Madrid, Spain
dc.description.affiliationUnespUNESP, Dept Fis, Bauru, SP, Brazil
dc.description.affiliationUnespUNESP, Dept Fis, Rio Claro, SP, Brazil
dc.format.extent522-524
dc.identifierhttp://dx.doi.org/10.1016/j.physb.2006.01.237
dc.identifier.citationPhysica B-condensed Matter. Amsterdam: Elsevier B.V., v. 378-80, p. 522-524, 2006.
dc.identifier.doi10.1016/j.physb.2006.01.237
dc.identifier.issn0921-4526
dc.identifier.lattes1353862414532005
dc.identifier.orcid0000-0002-7734-4069
dc.identifier.urihttp://hdl.handle.net/11449/31739
dc.identifier.wosWOS:000238426600222
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofPhysica B: Condensed Matter
dc.relation.ispartofjcr1.453
dc.relation.ispartofsjr0,417
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectmagnetic materialspt
dc.subjectspinelspt
dc.subjectimpedancept
dc.titleMetal-insulator transitions and magnetic ordered states in oxygen-depleted manganitesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.lattes1353862414532005[1]
unesp.author.orcid0000-0002-7734-4069[1]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Geociências e Ciências Exatas, Rio Claropt
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt
unesp.departmentFísica - IGCEpt

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Bauru - FC - Faculdade de Ciências
Rio Claro - IGCE - Instituto de Geociências e Ciências Exatas