Nuclear magnetic resonance study of the Sm2Fe17Nx compounds

Abstract The 147 Sm and 149 Sm NMR spin echo spectra of Sm 2 Fe 17 N x ( x = 0, 0.4, 1.2, 2) series at 4.2 K are presented. The observed quadrupole septets are assigned to the 6c site of Sm with a different number of neighbouring N atoms. From the quadrupole splittings the values of the lattice contribution to the electric field gradient are obtained. On this basis the values of the crystal electric field coefficient A 0 2 for different numbers of N neighbours are derived.