Abstract

Nd1+xFe10Mo2Ny nitrides with permanent magnetic properties were prepared by heating fine NdFeMo particles in an N2 atmosphere followed by milling. The best composition and nitriding and milling conditions to obtain a high coercivity and energy product for the nitrides were investigated. Hc and Br of magnetically aligned samples increased and decreased monotonically respectively with increasing milling time after nitriding irrespective of composition and nitriding conditions. The room temperature properties μoHc = 0.7 T, Br = 0.4 T and (BH)max = 42 kJ m−3 were obtained.

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