Magnetic Susceptibilities of ThM2X2 Compounds (M = Cr,Mn, Fe,Co, Ni and Cu; X = Si and Ge)

Magnetic susceptibilities of a series of ternary intermetallic compounds of the general composition ThM₂X₂(M = Cr, Mn, Fe, Co, Ni and Cu; X = Si and Ge) were determined by means of FARADAY method in the temperature interval 100–570°K. The results confirm the previously proposed magnetic behaviour of these compounds, based on the observation of the basic crystallographic parameters as a function of the atomic number of the transition metal element. The compounds were found to be alternatively ferromagnetics and antiferromagnetics depending on the atomic number of the transition metal atom.