MAGNETIC-PROPERTIES OF THE SOLID-SOLUTION NDGA1-XGEX

A solid solution was found between the binary phases NdGa and Nace at 600 degrees C. X-ray powder diffraction patterns were indexed on the b asis of a C-centered ortho rhombic cell. No deviations from the struct ure type alpha-IT1 were encountered for the pseudobinary samples. The magnetic results showed that all samples ale ferromagnets. Both the or dering temperature as well as theta(p) revealed a maximum at x = 0.2. Applying the RKKY-theory to the NdGa1-xGex system infers that the magn etic properties strongly depend on the Fermi wave vector and hence on the concentration of the conduction electrons.