Intrinsic and hard magnetic properties of rapidly quenched NdFe10Mo2Nx ribbons

Abstract The magnetic anisotropy fields of nitrogenated NdFe 10 Mo 2 N x compound are found to be 20 and 8.6 T at 10 and 300 K respectively. Magnetically hard NdFe 10 Mo 2 N x with a coercivity of 8.8 kOe at room temperature and 33.7 kOe at 10 K is obtained by nitrogenating melt-spun NdFe 10 Mo 2 ribbons. The coercivity depends strongly on the nitrogenation temperature and time with the maximum values obtained for nitrogenation at 570 °C for 4 h. The high coercivity is related to the purity of the ThMn 12 phase and the uniformity of nitrogenation.