Title :
Experimental determination of the switching field and its temperature dependence of isotropic polycrystalline hard magnets
Author :
Hermann, R. ; Givord, D. ; Rossignol, M. ; Fillion, G. ; Handstein, A.
Author_Institution :
F/B Maschinenbau/Verfahrenstechnik, Hochschule fur Technik und Wirtschaft, Dresden, Germany
fDate :
3/1/1994 12:00:00 AM
Abstract :
The single particle switching field and its temperature dependence of an isotropic sintered NdFeB hard magnet are determined by a new method using both the perpendicular and the parallel component of the susceptibility related to the applied field. The results can be fitted by a simple 1/cos ϑ law for Θ<60°, indicating an anisotropy field in the activation volume not too strongly reduced with respect to that of the Φ phase Nd2Fe14B
Keywords :
boron alloys; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic susceptibility; neodymium alloys; permanent magnets; NdFeB; activation volume; anisotropy field; isotropic polycrystalline hard magnets; susceptibility; switching field; temperature dependence; Crystallization; Magnetic field measurement; Magnetic properties; Magnetic susceptibility; Magnetic switching; Magnetization; Magnets; Remanence; Switches; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
