Fine-grained Sm 2 Fe 17 N x compounds are easily prepared after nitridation for 4, 6 and 10 h. The structural, lattice parameters and saturation magnetization of the Sm 2 Fe 17 N x system are presented. The pure Sm 2 Fe 17 parent phase and nitrides all behave like the Th 2 Zn 17 -type structure. Little SmFe 7 phase and α-Fe phase are coexisting in all Sm 2 Fe 17 N x compounds. No unnitrided phase is found. The deviation 2θ for the same nitrided sample almost decreases linearly with increasing 2θ angles but th…
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