Abstract

Abstract Neutron powder diffraction studies indicate that PrFe 10.5 Mo 1.5 N x retains the ThMn 12 -type structure, and nitrogen atoms occupy the interstitial 2 b sites. According to the structure parameters, the crystal-field coefficients of Pr 3+ in the PrFe 10.5 Mo 1.5 compounds and their nitrides were calculated using the single-ion model. The results show that upon nitrogenation the easy magnetization direction of PrFe 10.5 Mo 1.5 changes from easy plane to easy axis. As a preliminary attempt, magnetic powders based on PrFe 10.5 Mo 1.5 N x were obtained with a maximum energy product of 16.6 MGOe at room temperature.

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