Title :
Coercivity mechanism of Zn-bonded isotropic Sm2Fe17 Nx permanent magnets prepared by HDDR
Author :
Kou, X.C. ; Sinnecker, E.H.C.P. ; Grossinger, R. ; Wendhausen, P.A.P. ; Müller, K.H.
Author_Institution :
Inst. for Exp. Phys., Tech. Univ. of Vienna, Austria
fDate :
11/1/1995 12:00:00 AM
Abstract :
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
Keywords :
coercive force; crystal microstructure; ferromagnetic materials; iron alloys; magnetic domains; magnetisation reversal; permanent magnets; samarium alloys; stoichiometry; zinc alloys; 4.2 to 600 K; HDDR preparation; Sm2Fe17NxZny; Sm2Fe17NZn; Zn content; Zn-bonded magnets; coercivity field; magnetization reversal; micromagnetic model; microstructure; permanent magnets; reversed domain nucleation; temperature dependence; Coercive force; Magnetic analysis; Magnetic field measurement; Magnetization reversal; Micromagnetics; Permanent magnets; Temperature dependence; Temperature distribution; Temperature measurement; Zinc;
Journal_Title :
Magnetics, IEEE Transactions on
