The diffusion of Ni atoms in samarium monosulfide was studied for the first time. Using the sequential layer removal technique, it was found that the coefficient of diffusion of the 63Ni radioactive isotope at 1050C amounted to about 1.8 x 10−10cm2/s in SmS single crystals and to 5.3 x 10−9 and 1.2 x 10−10cm2/s for the fast and slow diffusion components, respectively, in polycrystalline SmS. The process of nickel diffusion in thin polycrystalline SmS films was studied using an X-ray diffraction technique. The coefficient of diffusion at 400C in thin-film samples according to these data was some 10−13cm2/s.

Nickel Diffusion in Samarium Sulfide. V.A.Didik, V.V.Kaminskiĭ, E.A.Skoryatina, V.P.Usacheva, N.V.Sharenkova, A.V.Golubkov: Technical Physics Letters, 2006, 32[7], 555-7