• Usachev, D.Y.; Dobrotvorskii, A.M.; Varykhalov, A.Y.; Rybkin, A.G.; Adamchuk, V.K.: Structural Stability of Stepped Nickel Surfaces. Physics of the Solid State 53 (2011), p. 1277-1282


Abstract:
The structural stability of stepped Ni(755) and Ni(771) surfaces in the temperature range 20-500 degrees C and during adsorption of oxygen and different forms of carbon has been studied using scanning tunneling microscopy and low-energy electron diffraction. A phase transition from the structure with double steps at room temperature to the structure with single steps at a temperature above 350 degrees C has been observed on the clean Ni(755) surface. This transition disappears after oxygen adsorption at a temperature above 350 degrees C. In this case, the structure on the Ni(755) surface with single steps is stabilized in contrast to Ni(771), which tends to faceting during oxygen adsorption. It has been shown that fullerenes C(60) form an array of one-dimensional chains at the upper boundaries of steps of the substrate, when they are adsorbed on the Ni(755) surface.