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Magnetic and Structural Properties of the Mechanically Alloyed Nd2(Fe100 − x Nb x )14B System

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Abstract

In this work we report the magnetic and structural properties obtained by Mössbauer spectrometry, Vibrating Sample Magnetometer and X-ray diffraction of milled powders with initial composition Nd2(Fe100 − x Nb x )14B with x = 0 and x = 4. The mixtures were ball milled for different times up to 240 h. Structural and microstructural parameters were derived from high statistics X-ray patterns and discussed as a function of milling time. The Mössbauer spectra of the samples were fitted by means of a sextet and an hyperfine field distribution, associated to a pure iron phase (α-Fe) and a disordered iron-based phase, respectively. The α-Fe grain size decreases from 50 nm for 6 h up to 5 nm for 240 h milling time. The Vibrating Sample Magnetometer results allow to conclude that these samples behave as soft ferromagnets.

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Correspondence to D. Oyola Lozano.

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Lozano, D.O., Zamora, L.E., Perez Alcazar, G.A. et al. Magnetic and Structural Properties of the Mechanically Alloyed Nd2(Fe100 − x Nb x )14B System. Hyperfine Interact 161, 203–209 (2005). https://doi.org/10.1007/s10751-005-9184-2

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  • DOI: https://doi.org/10.1007/s10751-005-9184-2

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