Phase composition and magnetic properties of Ni$_{1-x}$Co$_x$Fe$_2$O$_4$ nanocrystals with spinel structure, synthesized by

Anh Tien Nguyen; Tien Dat Nguyen; V. O. Mittova; M. V. Berezhnaya; I. Ya. Mittova

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Phase composition and magnetic properties of Ni$_{1-x}$Co$_x$Fe$_2$O$_4$ nanocrystals with spinel structure, synthesized by

Anh Tien Nguyen ; Tien Dat Nguyen ; V. O. Mittova ; M. V. Berezhnaya ; I. Ya. Mittova

Nanosistemy: fizika, himiâ, matematika, Tome 8 (2017) no. 3, pp. 371-377.

Voir la notice de l'article provenant de la source Math-Net.Ru

Résumé

Nanopowders of nickel ferrite doped with cobalt were synthesized by co-precipitation using a 3 % KOH solution as a precipitant. The effects of different annealing regimes on the composition and particle size of Ni$_{1-x}$Co$_x$Fe$_2$O$_4$ were studied. It was established that with annealing at t = 1000$^\circ$ C for 2 h single-phase products were formed with a crystallite size of 30–50 nm. The saturation magnetization and the coercive force increased as the content of the dopant increased from 50.3 emu/g and 51.94 Oe for Co$_x$Fe$_2$O$_4$ to 80.45 emu/g and 848.32 Oe for CoFe$_2$O$_4$.

Keywords: spinel, nanocrystals, co-precipitation, magnetic properties.
Mots-clés : ferrites

@article{NANO_2017_8_3_a11,
     author = {Anh Tien Nguyen and Tien Dat Nguyen and V. O. Mittova and M. V. Berezhnaya and I. Ya. Mittova},
     title = {Phase composition and magnetic properties of {Ni}$_{1-x}${Co}$_x${Fe}$_2${O}$_4$ nanocrystals with spinel structure, synthesized by},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {371--377},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2017_8_3_a11/}
}

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Anh Tien Nguyen; Tien Dat Nguyen; V. O. Mittova; M. V. Berezhnaya; I. Ya. Mittova. Phase composition and magnetic properties of Ni$_{1-x}$Co$_x$Fe$_2$O$_4$ nanocrystals with spinel structure, synthesized by. Nanosistemy: fizika, himiâ, matematika, Tome 8 (2017) no. 3, pp. 371-377. http://geodesic.mathdoc.fr/item/NANO_2017_8_3_a11/