Microstructure and interphase magnetic coupling in Nd2Fe14B/alpha-Fe nanocomposites obtained by mechanical milling and short time annealing - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Romanian Journal of Physics Année : 2016

Microstructure and interphase magnetic coupling in Nd2Fe14B/alpha-Fe nanocomposites obtained by mechanical milling and short time annealing

Résumé

The effects of short time annealing and soft phase pre-milling on the structural and magnetic properties of 6 h milled Nd2Fe14B/10wt% Fe magnetic nanocomposites were investigated. The X-ray diffraction peaks of Nd2Fe14B disappeared after milling due to crystal structure damage, this effect being more pronounced when using pre-milled Fe. After annealing, the characteristic peaks of Nd2Fe14B were restored with a limited growth of the α-Fe crystallites. The best exchange coupling was obtained for the samples which contain unmilled Fe as the soft phase. The maximum coercive field is 0.61 T. The samples containing pre-milled Fe have lower coercive field values, but show a higher remanence. The Nd2Fe14B/α-Fe exchange coupling is analysed.
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Dates et versions

hal-01882956 , version 1 (01-10-2018)

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  • HAL Id : hal-01882956 , version 1

Citer

Sever Mican, Răzvan Hirian, Leopold V.B. Diop, Ionel Chicinaş, Olivier Isnard, et al.. Microstructure and interphase magnetic coupling in Nd2Fe14B/alpha-Fe nanocomposites obtained by mechanical milling and short time annealing. Romanian Journal of Physics, 2016, 61 (3-4), pp.506-517. ⟨hal-01882956⟩

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