Abstract The magnetic field effect on the reactive sintering process of MnBi was investigated. Magnetic-field-induced enhancement of the reaction was found to be exhibited at the initial stages. The coercivity field decreased with an increase in the in-field annealing time. The kinetics of the reaction were in good agreement with the diffusion-controlled reaction model. It is suggested that the decrease in activation energy at the initial stages of reaction increased the amount of formed MnBi phases, resulting in enhancement of the reaction Mn + Bi to MnBi phase by in-field reactive sintering.

中文翻译：

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强磁场下铁磁MnBi的反应烧结过程

摘要 研究了磁场对MnBi 反应烧结过程的影响。发现在初始阶段表现出磁场诱导的反应增强。矫顽力场随着场内退火时间的增加而减小。反应动力学与扩散控制反应模型非常吻合。这表明反应初始阶段活化能的降低增加了形成的 MnBi 相的数量，导致反应 Mn + Bi 通过场内反应烧结增强为 MnBi 相。