Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8156335 | Journal of Magnetism and Magnetic Materials | 2015 | 4 Pages |
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 2.857Â Ã
. 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 2.86Â Ã
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 890Â Oe (at 5Â K). The coercive field and magnetization value depend on the size of nanoparticles as well as the diamagnetic contribution of carbon encapsulation.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Pranjal Nautiyal, Md. Motin Seikh, Oleg I. Lebedev, Asish K. Kundu,