Magnetic Properties of Nonstoichiometric and Quasi-Binary CeFe2-Based Compounds Doped with Mn

Resumo

New nonstoichiometric compounds CeFe₂Mn_x with a structure of the cubic Laves phase have been synthesized. The concentration range of Mn solubility has been determined. The structure and elemental composition were studied by means of X-ray powder diffraction and energy-dispersive X-ray spectroscopy. Temperature dependences of magnetization were measured. To determine Curie temperatures, magnetic susceptibility measurements were performed. The results obtained for the samples of different compositions of nonstoichiometric and quasi-binary compounds are analyzed taking into account specific features of electronic structure of Ce atoms.