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hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHENNABASAPPA, Madhu
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPETIT, Emmanuel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorTOULEMONDE, Olivier
dc.date.issued2020-04
dc.identifier.issn0272-8842
dc.description.abstractEnWe report a two steps synthesis of strontium rich cobaltates La1-xSrxCoO3-δ (0.5 ≤ x ≤ 0.9) compounds. Following the standard solid state procedure, an oxygen intercalation process has been carried out. All the compounds show a perovskite related type structure. Samples have been characterized from chemical and structural point of view. The cubic “a” cell parameter saturates with the oxygen deficiency parameters δ that is controlled by the thermodynamic parameters (pO2; T). The magnetic properties studies were carried out before and after oxygen intercalation process and a continuous transfer from a localized character to an itinerant one's when oxygen is up taken is supported. A complete magnetic phase diagram with respect to temperature is proposed. One further evidence for attaining of Co+3.58 against Co+3.70 in La0.3Sr0.7CoO3-δ with the help of electrochemical oxidation that definitively both metal like behavior and higher than 280 K paramagnetic to ferromagnetic temperature phase transition unambiguously signed an oxygen stoichiometry close to 3 in La1-xSrxCoO3 perovskites serie.
dc.language.isoen
dc.publisherElsevier
dc.subject.enLa1-xSrxCoO3 perovskite
dc.subject.enCobaltates
dc.subject.enDouble exchange
dc.subject.enItinerant magnetism
dc.subject.enElectrochemical oxidation 2
dc.title.enToward oxygen fully stoichiometric La1-xSrxCoO3 (0.5≤x≤0.9) perovskites: Itinerant magnetic mechanism more than double exchange one's
dc.typeArticle de revue
dc.identifier.doi10.1016/j.ceramint.2019.11.067
dc.subject.halChimie/Matériaux
dc.description.sponsorshipEuropeSpin and Orbital Physics : Research of Advanced New Oxides
bordeaux.journalCeramics International
bordeaux.page6067-6072
bordeaux.volume46
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-02613653
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02613653v1
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