Toward oxygen fully stoichiometric La1-xSrxCoO3 (0.5≤x≤0.9) perovskites: Itinerant magnetic mechanism more than double exchange one's
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHENNABASAPPA, Madhu | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | PETIT, Emmanuel | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TOULEMONDE, Olivier | |
| dc.date.issued | 2020-04 | |
| dc.identifier.issn | 0272-8842 | |
| dc.description.abstractEn | We 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.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | La1-xSrxCoO3 perovskite | |
| dc.subject.en | Cobaltates | |
| dc.subject.en | Double exchange | |
| dc.subject.en | Itinerant magnetism | |
| dc.subject.en | Electrochemical oxidation 2 | |
| dc.title.en | Toward oxygen fully stoichiometric La1-xSrxCoO3 (0.5≤x≤0.9) perovskites: Itinerant magnetic mechanism more than double exchange one's | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.ceramint.2019.11.067 | |
| dc.subject.hal | Chimie/Matériaux | |
| dc.description.sponsorshipEurope | Spin and Orbital Physics : Research of Advanced New Oxides | |
| bordeaux.journal | Ceramics International | |
| bordeaux.page | 6067-6072 | |
| bordeaux.volume | 46 | |
| bordeaux.issue | 5 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02613653 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02613653v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Ceramics%20International&rft.date=2020-04&rft.volume=46&rft.issue=5&rft.spage=6067-6072&rft.epage=6067-6072&rft.eissn=0272-8842&rft.issn=0272-8842&rft.au=CHENNABASAPPA,%20Madhu&PETIT,%20Emmanuel&TOULEMONDE,%20Olivier&rft.genre=article |
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