Magnetic properties and Mössbauer studies of multiphase Nd–Fe–B alloy obtained from the dissociation of Nd2Fe14B melt spun ribbon

Nd2Fe14B crystallized from melt spun Nd13Fe79B8 dissociates during high temperature controlled oxidation. The magnetic moment of the final system was measured from 1.7 to 1100K under a magnetic field of 5 and 0.7T, using a SQUID and a magnetic microbalance. The results show the formation of mainly F...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2003-05, Vol.261 (3), p.311-313
Main Authors: Machado da Silva, J.M., Oliveira, J.B., Rogalski, M.S., Sá, M.A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Magnetization
Mossbauer effect
other γ-ray spectroscopy
Mössbauer
Mössbauer effect
other γ-ray spectroscopy
Oxidation
Permanent magnets
Physics
Studies of specific magnetic materials
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Summary:Nd2Fe14B crystallized from melt spun Nd13Fe79B8 dissociates during high temperature controlled oxidation. The magnetic moment of the final system was measured from 1.7 to 1100K under a magnetic field of 5 and 0.7T, using a SQUID and a magnetic microbalance. The results show the formation of mainly Fe3B, Nd2O3 and a third phase paramagnetic at room temperature. The dissociation of the Nd2Fe14B hard phase was followed by 57Fe Mössbauer spectometry in addition to thermomagnetic measurements.
ISSN:0304-8853
DOI:10.1016/S0304-8853(01)00148-2