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Insulator–metal transition in Nd0.8Na0.2Mn(1−x)CoxO3 perovskites

hal.structure.identifierInstitute of Physics
dc.contributor.authorPOLLERT, Emil
hal.structure.identifierInstitute of Physics
dc.contributor.authorHEJTMÁNEK, Jiří
hal.structure.identifierInstitute of Physics
dc.contributor.authorKNÍ?EK, Karel
hal.structure.identifierInstitute of Physics
dc.contributor.authorMARY?KO, Miroslav
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDOUMERC, Jean-Pierre
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGRENIER, Jean-Claude
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorETOURNEAU, Jean
dc.date.issued2003
dc.identifier.issn0022-4596
dc.description.abstractEnThe electric and magnetic properties of the perovskites Nd0.8Na0.2Mn(1−x)CoxO3 (0less-than-or-equals, slantxless-than-or-equals, slant0.2) prepared by the usual ceramic procedure were investigated. The insulator-to-metal-like (IM) transition, closely related to a ferromagnetic arrangement, was revealed for the composition of x=0.04 and a similar tendency was detected for x=0. The insulating behavior persists down to low temperatures for higher contents of cobalt ions in spite of the transition to the bulk ferromagnetism. The properties are interpreted in terms of the steric distortion, tilting of the Mn(Co)O6 octahedra and the double-exchange interactions of the type Mn3+–O2−–Mn4+and Mn3.5+δ–O2−–Co2+, respectively. Presence of antiferromagnetic domains in the ferromagnetic matrix for the most of cobalt-substituted samples is supposed.
dc.language.isoen
dc.publisherElsevier
dc.subject.enManganese perovskites
dc.subject.enInsulator–metal transition
dc.title.enInsulator–metal transition in Nd0.8Na0.2Mn(1−x)CoxO3 perovskites
dc.typeArticle de revue
dc.identifier.doi10.1016/S0022-4596(02)00151-2
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Solid State Chemistry
bordeaux.page368-373
bordeaux.volume170
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00242099
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00242099v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Solid%20State%20Chemistry&rft.date=2003&rft.volume=170&rft.issue=2&rft.spage=368-373&rft.epage=368-373&rft.eissn=0022-4596&rft.issn=0022-4596&rft.au=POLLERT,%20Emil&HEJTM%C3%81NEK,%20Ji%C5%99%C3%AD&KN%C3%8D?EK,%20Karel&MARY?KO,%20Miroslav&DOUMERC,%20Jean-Pierre&rft.genre=article


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