Pseudomorphic deposits of chromium on nickel

Abstract Chromium films were prepared by evaporation of the metal in ultra-high vacuum onto the (001) surfaces of nickel. A shutter was moved between source and substrate during film growth so that films in which there were thickness gradients were obtained. The very thin (roughly 10 A) parts of the chromium deposits were face-centred cubic, and dislocations to accommodate part of the misfit between the lattices of nickel and f.c.c. chromium were present. Thicker deposits contained small nuclei of chromium in the stable b.c.c. structure.