Change of magnetic properties of Th2Fe17 due to interstitial solution of C and N

Abstract

The changes in magnetic and crystallographic properties in the series Th₂Fe₁₇C_x and Th₂Fe₁₇N_x have been studied. The changes in the latter series were also studied by ⁵⁷Fe Mössbauer spectroscopy. The ultimate enhancements of the saturation moments in these series are 13% and 24%, respectively. This is much larger than observed previously in the corresponding rare‐earth compounds, although the Curie temperature enhancements are of comparable magnitude. In the Th–Fe–C system a novel compound of the BaCd₁₁ type was found, having a Curie temperature around 370 K.