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The formation of single-phase equiatomic MnBi by rapid solidification

Published online by Cambridge University Press:  31 January 2011

X. Guo ,
A. Zaluska ,
Z. Altounian  and
J. O. Ström-Olsen
X. Guo
Affiliation:
Centre for the Physics of Materials and Department of Physics, McGill University, 3600 University Street, Montréal, Québec, Canada, H3A 2T8
A. Zaluska
Affiliation:
Centre for the Physics of Materials and Department of Physics, McGill University, 3600 University Street, Montréal, Québec, Canada, H3A 2T8
Z. Altounian
Affiliation:
Centre for the Physics of Materials and Department of Physics, McGill University, 3600 University Street, Montréal, Québec, Canada, H3A 2T8
J. O. Ström-Olsen
Affiliation:
Centre for the Physics of Materials and Department of Physics, McGill University, 3600 University Street, Montréal, Québec, Canada, H3A 2T8
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Abstract

The low temperature phase (LTP) of MnBi, which is of interest because of its large magnetic anisotropy, has been obtained in almost single-phase form (>95%) by rapid solidification, followed by thermal annealing. X-ray and electron microscope studies indicate that the melt-spun ribbons are amorphous, contrary to the accepted rules for glass formation. The transformation of the amorphous phase is a complex process. The amorphous phase crystallizes first into Bi, Mn3Bi, and ferrimagnetic MnBi. The formation of the LTP begins immediately after the eutectic melting of these phases around 540 K.

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 11 , November 1990 , pp. 2646 - 2651
Copyright
Copyright © Materials Research Society 1990

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References

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