Title :
Temperature dependence of permanent-magnet properties of zinc-bonded Sm2Fe17Nx
Author :
Handstein, A. ; Wendhausen, P.A.P. ; Eckert, D. ; Muller, K.-H.
Author_Institution :
Inst. fuer Festkorper- und Werkstofforschung Dresden, Germany
fDate :
9/1/1992 12:00:00 AM
Abstract :
At temperatures below 200 K the demagnetization curves of Zn-bonded Sm2Fe17Nx magnets show a dip indicating different types of ferromagnetic particles in the material. The coercivity decreases more rapidly with increasing temperature than the anisotropy field. The shape of demagnetization curves and the coercivity can be improved by sieving the milled powder. The internal magnetization processes are a combination of nucleation of easily movable domain walls and single-domain-particle processes
Keywords :
X-ray diffraction examination of materials; annealing; coercive force; demagnetisation; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic domain walls; magnetic susceptibility; permanent magnets; remanence; samarium alloys; Sm2Fe17Nx magnets; X-ray diffraction; anisotropy field; annealing; coercivity; demagnetization curves; domain walls; ferromagnetic particles; induction melting; internal magnetization processes; milled powder sieving; nucleation; permanent-magnet properties; remanence; single-domain-particle processes; susceptibility; temperature dependence; Anisotropic magnetoresistance; Coercive force; Demagnetization; Iron; Magnetic materials; Magnetization processes; Magnets; Powders; Shape; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
