Abstract
Four samples of Nd/sub 2/Fe/sub 17-x/M/sub x/C/sub y/ (where M=Al,Ga,Ti,V) were synthesized using rf induction melting and C was introduced from the melt. Structural studies were the carried out using neutron diffraction. All samples were confirmed to have the Th/sub 2/Zn/sub 17/-type rhombohedral structure with expanded unit cell volumes. However, the volume effect, as well as the site preference of the substitutional atoms (M) is different among these samples and is different compared to their uncarbided counterparts. The C atoms were found to reside in the 9e site for all samples. The observed Curie temperature is higher for samples with higher C concentrations.
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