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Article dans une revue
Gigantic effect of iron doping upon magnetism in the «114» magnetoelectric CaBaCo4O7
Abstract : The investigation of the CaBaCo4-xFex07 oxide shows that a huge decrease of ferrimagnetism is produced for very low Fe contents (x andlt; 0.05) at the benefit of magnetic phase separation and magnetic frustration. This gigantic effect of iron doping at the Co3+ sites in CaBaCo4O7 is compared to that produced by diamagnetic Ga3+ and Al3+ dopants, showing that the antiferromagnetic interactions between the dopant Fe3+ and the Co2+ ferromagnetic chains has a crucial role in the destabilization of the ferrimagnetic structure, whereas the triangular geometry of the cobalt sublattice imposes the appearance of magnetic frustration. © 2015 Elsevier B.V. All rights reserved.
https://hal-normandie-univ.archives-ouvertes.fr/hal-02184783
Contributeur : Université Normandie <>
Soumis le : mardi 16 juillet 2019 - 11:33:49
Dernière modification le : mercredi 17 juillet 2019 - 01:37:30
Contributeur : Université Normandie <>
Soumis le : mardi 16 juillet 2019 - 11:33:49
Dernière modification le : mercredi 17 juillet 2019 - 01:37:30
