Intermetallic Fe-Si films with a D03 structure, close to the stoichiometric Fe3Si composition, were prepared on an MgO (100) substrate. Nuclear resonant scattering measurements in the grazing incidence geometry revealed a maximum Fe diffusivity at the surface, and a continuous decrease with depth. The depth and temperature dependences were measured, and compared with the bulk values.

Depth Dependence of Iron Diffusion in Fe3Si Studied with Nuclear Resonant Scattering. D.Kmiec, B.Sepiol, M.Sladecek, M.Rennhofer, S.Stankov, G.Vogl, B.Laenens, J.Meersschaut, T.Alęzak, M.Zając: Physical Review B, 2007, 75[5], 054306 (5pp)