The intrinsic magnetic material parameters of the 2: 17 type matrix phase and the 1: 5 type precipitation phase in sintered multiphase Sm(Co0.68Cu0.08Fe0.22Zr0.02)7.6 permanent magnets are determined in the whole ferromagnetic temperature regime between 10 K and Tc = 1070 K. Magnetization curves measured parallel and perpendicular to the alignment axis are analysed taking into account the volume fractions of ferromagnetic phases, their magnetostatic interactions, and the angular distribution of grain axes. The influence of annealing treatments on the intrinsic magnetic properties of the relevant ferromagnetic phases are investigated.
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Durst et al. (1988) studied this question.
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