Magnetic properties of (misch metal, Nd)-Fe-B melt-spun magnets

The effect of replacing Nd with misch metal (MM) on magnetic properties and thermal stability has been investigated on melt-spun (Nd1-xMMx)13.5Fe79.5B7 ribbons by varying x from 0 to 1. All of the alloys studied crystallize in the tetragonal 2:14:1 structure with single hard magnetic phase. Curie te...

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Bibliographic Details
Published in:AIP advances 2017-05, Vol.7 (5), p.056207-056207-6
Main Authors: Li, R., Shang, R. X., Xiong, J. F., Liu, D., Kuang, H., Zuo, W. L., Zhao, T. Y., Sun, J. R., Shen, B. G.
Format: Article
Language:English
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Summary:The effect of replacing Nd with misch metal (MM) on magnetic properties and thermal stability has been investigated on melt-spun (Nd1-xMMx)13.5Fe79.5B7 ribbons by varying x from 0 to 1. All of the alloys studied crystallize in the tetragonal 2:14:1 structure with single hard magnetic phase. Curie temperature (T c), coercivity (H cj), remanence magnetization (B r) and maximum energy product ((BH)max) all decrease with MM content. The melt-spun MM13.5Fe79.5B ribbons with high ratio of La and Ce exhibit high magnetic properties of H cj = 8.2 kOe and (BH)max= 10.3 MGOe at room temperature. MM substitution also significantly strengthens the temperature stability of coercivity. The coercivities of the samples with x = 0.2 and even 0.4 exhibit large values close to that of Nd13.5Fe79.5B7 ribbons above 400 K.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4973846