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Correlation between electronic and magnetic properties of LaMnO 3-δ : experimental study and DFT-MBJ calculation

Article scientifique 2024 Anglais

Résumé

Abstract Structural, magnetic, magnetocaloric and thermoelectricproperiesLa0.9†0.1MnO2.9 wereexamined in this original paper. Indeed, the structural study demonstrated that this compound crystallized in the rhombohedric system with R-3c space group. The magnetization in terms of temperature corroborated the PM-FM transition when temperature decreased. The fit of hysteresis cycle at 5 K FM showed a domination of the FM contributions. Subsequently a magnetic entropy change deduced from the isothermal magnetization curves was observed in our samples with a peak centered on their Curie temperature (TC). The total electronic density states (TDOS) prove the coexistence of metallic behavior for spin up states and semiconductor characteristic with a Eg = 1.3 eV for spin down states. Thermoelectric properties analysis revealed promising behavior, with ZT reaching 1.1 at 420 K

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Henchiri, C., Mabrouki, A., Zhou, H., Argoubi, F., Gu, S., Qi, Q., Dhahri, E., Valente, M. (2024). Correlation between electronic and magnetic properties of LaMnO 3-δ : experimental study and DFT-MBJ calculation. https://doi.org/10.21203/rs.3.rs-4119590/v1

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Auteur(s)

Chadha Henchiri Ala Eddin Mabrouki Hai-Shan Zhou Fatma Argoubi Shouxi Gu Qiang Qi Esseti Dhahri Manuel Almeida Valente

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