Tuning the spontaneous exchange bias effect with Ba to Sr partial substitution in La1.5(Sr0.5−xBax)CoMnO

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dc.creatorBelluz, Marlon Boldrin
dc.creatorSilva, A. G.
dc.creatorCoutrim, Leandro Tolentino
dc.creatorJesus, Jonathas Rafael de 
dc.creatorOliveira, Calazans Barbosa Marques Macchiutti de
dc.creatorBittar, Eduardo Matzenbacher
dc.creatorBufaiçal, Leandro Felix de Sousa
dc.date.accessioned2024-02-20T15:18:34Z
dc.date.available2024-02-20T15:18:34Z
dc.date.issued2020
dc.description.abstractThe spontaneous exchange bias (SEB) effect is a remarkable phenomenon recently observed in some reentrant spin-glass materials. Here, we investigate the SEB in La1.5(Sr0.5−xBax)CoMnO6 double-perovskites, a system with multifarious magnetic phases for which a notable increase in the exchange bias field is observed for intermediate Sr/Ba concentrations. The Ba to Sr substitution leads to the enhancement of the crystal lattice, which is accompanied by the increase in both the effective magnetic moment (μeff) and the antiferromagnetic (AFM) transition temperature that is observed below the ferromagnetic ordering. Such an increase is likely related to the increased fraction of Co3+ in the high spin configuration, leading to the enhancement of the Co3+–O–Mn4+ AFM phase and the reduction in the uncompensation of the AFM coupling between Co and Mn. The combined effect of the increased μeff and AFM phase plausibly explains the changes in the SEB effect.
dc.identifier.citationBOLDRIN, M. et al. Tuning the spontaneous exchange bias effect with Ba to Sr partial substitution in La1.5(Sr0.5−xBax)CoMnO. Applied Physics Letters, College Park, v. 117, e212402, 2020. DOI: 10.1063/5.0028663. Disponível em: https://pubs.aip.org/aip/apl/article/117/21/212402/38879/Tuning-the-spontaneous-exchange-bias-effect-with. Acesso em: 16 fev. 2024.
dc.identifier.doi10.1063/5.0028663
dc.identifier.issn0003-6951
dc.identifier.issne- 1077-3118
dc.identifier.urihttps://pubs.aip.org/aip/apl/article/117/21/212402/38879/Tuning-the-spontaneous-exchange-bias-effect-with
dc.language.isoeng
dc.publisher.countryEstados unidos
dc.publisher.departmentInstituto de Física - IF (RMG)
dc.rightsAcesso Restrito
dc.titleTuning the spontaneous exchange bias effect with Ba to Sr partial substitution in La1.5(Sr0.5−xBax)CoMnO
dc.typeArtigo

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