Investigation of interaction mechanisms in melt‐quenched NdFeB
Investigation of interaction mechanisms in melt‐quenched NdFeB
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DOI：
10.1063/1.355421
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发表时间：
1994-05
影响因子：
3.2
通讯作者：
L. Folks;R. Street;R. Woodward
中科院分区：
文献类型：
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作者：
L. Folks;R. Street;R. Woodward
通过测量Nd2Fe 14 B材料的磁化曲线（热退磁后）和室温下的退磁曲线的时间依赖性，研究了熔体淬火Nd2Fe 14 B材料的磁化过程。数量S（磁粘滞系数）和χirri（固有的不可逆磁化率）已确定的商业材料MQI（各向同性，树脂粘合），MQII（轻微各向异性，热压）和MQIII（各向异性，热成型），由美国Delco雷米公司生产。此外，δM（H），其将在磁化模式中的特定场处发生的不可逆过程的分数与在退磁模式中的相同场处发生的不可逆过程的分数进行比较，已被确定为一个功能的内部领域，并解释的结果在晶粒之间的相互作用。从这些结果可以看出，虽然这些材料的磁化和退磁行为有很大的不同，这可能是B。
Investigation of the magnetization processes in melt‐quenched Nd2Fe14B materials has been made by analysis of measurements of the time dependence of the magnetizing curves (after thermal demagnetization) and demagnetizing curves at room temperature. The quantities S (the magnetic viscosity parameter) and χirri (the intrinsic irreversible susceptibility) have been determined for the commercially available materials MQI (isotropic, resin bonded), MQII (slightly anisotropic, hot pressed), and MQIII (anisotropic, hot formed) produced by Delco Remy, U.S. In addition δM(H), which compares the fraction of irreversible processes occurring at a particular field in the magnetizing mode with those occurring at the same field in the demagnetizing mode, has been determined as a function of internal field, and the results are interpreted in terms of interactions between grains. From these results it is shown that although the magnetization and demagnetization behavior of these materials differ substantially, this may b...