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Coercivity mechanism of Zn-bonded isotropic Sm2Fe17 Nx permanent magnets prepared by HDDR

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5 Author(s)
Kou, X.C. ; Inst. for Exp. Phys., Tech. Univ. of Vienna, Austria ; Sinnecker, E.H.C.P. ; Grossinger, R. ; Wendhausen, P.A.P.
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The temperature dependence of the coercivity field of Zn-bonded isotropic Sm-Fe-N permanent magnets produced by HDDR has been measured in the temperature range from 4.2 to about 600 K and been analyzed within the framework of micromagnetic model. The coercivity of the Zn-bonded magnets increases with the Zn content. The micromagnetic analysis suggests that the magnetization reversal process in Zn-bonded HDDR Sm-Fe-N magnets is determined by the nucleation of reversed domains. The way that Zn influences the coercivity of those magnets depends strongly on the microstructure of Sm2Fe17N x particles

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Magnetics, IEEE Transactions on  (Volume:31 ,  Issue: 6 )