Synthesis and magnetic properties of (Pr1−xSmx)5Fe17 (x = 0–1) phase

An investigation of the synthesis of the (Pr1−xSmx)5Fe17 (x = 0–1) phase and its magnetic properties is presented. (Pr1−xSmx)5Fe17 melt-spun ribbons were obtained that partly or mostly consisted of the amorphous phase and showed low coercivity. It was found that the (Pr,Sm)5Fe17 phase could be produced by annealing of the (Pr1−xSmx)5Fe17 melt-spun ribbons, regardless of the Sm content of the phase. The remanence and coercivity of the annealed melt-spun ribbons were highly dependent on both the annealing temperature and the Sm content of the (Pr1−xSmx)5Fe17 alloy. The highest remanence of 46.4 emu/g was achieved in the (Pr0.2Sm0.8)5Fe17 melt-spun ribbon annealed at 1073 K for 1 h, while the highest coercivity was achieved in the Sm5Fe17 melt-spun ribbon annealed at 973 K for 1 h.