COMPOSITION EFFECTS ON CRYSTAL AND ELECTRONIC-STRUCTURE OF CEM2-XSI2+X (M = FE, CO, NI, CU) ALLOYS

The influence of composition variations on crystal structure, differential thermo-e.m.f, and electronic structure parameters of the alloys CeM2-xSi2+x With M = Fe, Co, Ni, Cu is investigated. It is established that the range of possible mutual atom substitution of 3d elements and silicon increases with the growth of atomic number of the transition element: CeFe2-xSi2+x is a compound with rather narrow homogeneity range (x almost-equal-to 0), CeNi2-xSi2+x and CeCu2-xSi2+x are compounds of variable composition with lattice parameters and electronic structure depending on Ni(Cu and Si content.