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Magnetic Domain Structure: Analysis of Magnetic Reversal in RE-3d Permanent Magnets

机译:磁畴结构:RE-3d永磁体中磁反转的分析

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摘要

The possibilities of direct magnetic domain observation on surfaces of modern permanent magnets SmCo5, Sm-Zr-Co-Cu-Fe, Nd-Fe-B by means of the magneto-optical Kerr effect for the quantitative and qualitative testing of magnetization and magnetic reversal processes and nature of magnetic hysteresis were analyzed. For all types of investigated magnets, the angular dependences for saturation field Hs, critical field of reverse domain removal Hk, and nucleation field Hn of individual grains were found to obey the law 1/cosφ, where φ is the angle between the grain easy axis and external magnetic field.
机译:利用磁光克尔效应对现代永磁体SmCo5,Sm-Zr-Co-Cu-Fe,Nd-Fe-B进行直接磁畴观测的可能性,用于磁化和磁反转的定量和定性测试分析了磁滞的过程和性质。对于所有类型的研究磁体,发现单个晶粒的饱和场Hs,反向畴去除临界场Hk和成核场Hn的角度相关性均遵循定律1 /cosφ,其中φ是晶粒易轴之间的角度和外部磁场。

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