Some novel ternary ThMn12-type compounds

Ternary compounds based on the tetragonal ThMn12 structure are formed when rare earth. elements (R) are combined with iron and elements M (M ≡ Si, Ti, V, Cr, Mo or W). A structure determination was made for NdFe10Mo2, showing that the molybdenum atoms occupy only one of the three available crystallographic sites in this structure type. Detailed investigations of the systems YFe12 − xVx showed that there is a substantial range of solid solubility extending approximately from x = 1.5 to x = 3. Curie temperatures were determined for the two series YFe10M2 and GdFez10M2 and were found to depend strongly on the component M.