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Demonstrates enhanced magnetic properties in MnBi magnets, indicating a breakthrough in production methods.
In this study, we show for the first time that it is possible to manufacture the rare-earth-free magnetic α-MnBi phase directly using laser powder bed fusion of elemental Mn and Bi powder mixtures. We further present an analysis of the impact of printing parameters on α-MnBi phase formation and microstructure and subsequently on the magnetic properties. In the as-printed state, up to 50wt.% α-MnBi phase is formed. After annealing, the α-MnBi phase content increases. Compared to ambient temperature, the magnetic properties significantly improved at elevated temperature.
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Bachmaier et al. (2026) studied this question.
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