The structure of thin Ni f i l m on Au(OO1) and Au(OO1)iNi multilayers is studied as a function of the thickness of Ni using a semiempirical potential based on the tight-binding second-moment approximation. It is shown that the stable structure is pseudomorphic for a thickness less than five monolayers and [ZiiOl hcp or 4H for a greater thidoless with closepacked planes perpendicular to the interfaces. Moreover. we show that a thin Ni film gmwn on Au(0Ol) substrate is covered by at least one monolayer of Au. We compare ow results with high-resolution electronic microscopy (HREM) and x-ray diffraction.
The structural evolution of Au/Ni multilayers (with an increasing number of Ni monolayers (MLs)) has been investigated by HREM. As soon as the thickness of Ni becomes larger than 5 MLs, a structural change occurs which in fact has been predicted by numerical simulations. The deformation in the multilayer has been characterised by HREM image processing and has been related to the Ni profile. This profile has been compared to the chemical profile obtained by scanning PEELS analysis through the multilayer.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.