Effect of phase purity on enhancing the magnetic properties of Mn-Bi alloy
Journal of Magnetism and Magnetic Materials(2021)
摘要
•High quality LTP MnBi powders with enhanced magnetic properties were successfully synthesized by “induction melting” process.•The effects of heat treatments, ball milling and chemical compositions were finely optimized to enhance magnetic properties.•The high purity MnBi powders in this work show remarkably high saturation magnetization (Ms) of up to 74.8 Am2/kg.•After ball milling, Mn56Bi44 powders showed (BH)max of 11.7 MGOe at room temperature, close to 70% of the theoretical value, making rare-earth free MnBi promising candidate for applications.
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关键词
Rare-earth-free magnet,MnBi LTP,Phase purity,Magnetic properties
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