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Sol-gel synthesis of Fe-Co nanoparticles and magnetization study
Abstract : We report the synthesis of carbon encapsulated Fe-Co nanoparticles using conventional sol-gel route and its magnetization studies. The x-ray diffraction indicates the formation of the single phase body centered cubic alloy Fe-Co phase with cell parameter of 2.857 Å. Nanoparticles are highly crystalline and exhibit low index faceting as determined from high-resolution transmission electron microscopy (HRTEM) investigation. The observed orthogonal lattice planes with lattice distance of 2.86 Å are attributed to (100) and (010). HRTEM image confirms the cube like Fe-Co nanoparticles with core-shell structure of carbon encapsulation, composed of carbon and graphite materials. The magnetometry results of the carbon encapsulated alloy Fe-Co nanoparticles with core-shell structure designate as a ferromagnetically ordered soft magnet with coercive field of 890 Oe (at 5 K). The coercive field and magnetization value depend on the size of nanoparticles as well as the diamagnetic contribution of carbon encapsulation. © 2014 Elsevier B.V. All rights reserved.
https://hal-normandie-univ.archives-ouvertes.fr/hal-02184129
Contributeur : Elisabeth van T Hof <>
Soumis le : lundi 15 juillet 2019 - 18:05:01
Dernière modification le : vendredi 24 janvier 2020 - 11:20:11
Contributeur : Elisabeth van T Hof <>
Soumis le : lundi 15 juillet 2019 - 18:05:01
Dernière modification le : vendredi 24 janvier 2020 - 11:20:11
