The model eutectic emulsions of Sn-Pb and Ag-Ge systems are investigated for the purpose of confirmation of availability of the atoms with raised density in packing. The results of diffraction research are interpreted in the context of a notion about their microemulsion structure. The structure factor and function of radial distribution of atoms in the transition shells at the dispersion phase and dispersion medium interface are computed. The contraction of interatomic distances in the boundary layer is revealed as compared with the values in the pure liquid components and their solutions.