ANALYSIS OF THE MAGNETIC HARDENING MECHANISM IN RE-FEB PERMANENT-MAGNETS
ANALYSIS OF THE MAGNETIC HARDENING MECHANISM IN RE-FEB PERMANENT-MAGNETS
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DOI：
10.1016/0304-8853(88)90202-8
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发表时间：
1988-10-01
影响因子：
2.7
通讯作者：
SAGAWA, M
中科院分区：
文献类型：
--
作者：
KRONMULLER, H;DURST, KD;SAGAWA, M
对于解释极高的矫顽场的RE-NdB永磁体一般钉扎或成核机制的模型被认为是。在这两种情况下的晶粒之间的相界的磁性建议负责的实际值的Hc。本文在微磁理论对钉扎和形核机制的预言的基础上，详细分析了Hcis随温度的变化关系。结果表明，成核理论导致一个更连贯的解释比钉扎理论的所有相关属性的HC，如果不对齐的晶粒，本地杂散场和减少晶界各向异性的影响被考虑在内。
For the interpretation of extremely high coercive fields of RE-NdB permanent magnets in general either models of pinning or nucleation mechanisms are considered. In both cases the magnetic properties of the phase boundaries between the grains are suggested to be responsible for the actual value ofHc. In this paper a detailed analysis of the temperature dependence ofHcis given on the basis of the predictions of micromagnetic theories for pinning and nucleation mechanisms. It is shown that the nucleation theory leads to a far more coherent interpretation of all relevant properties ofHcthan the pinning theory if the effects of misaligned grains, local stray fields and reduced anisotropies in grain boundaries are taken into account.