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.
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Guo, X., Zaluska, A., Altounian, Z. et al. The formation of single-phase equiatomic MnBi by rapid solidification. Journal of Materials Research 5, 2646–2651 (1990). https://doi.org/10.1557/JMR.1990.2646
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DOI: https://doi.org/10.1557/JMR.1990.2646