Competition between silicon, beryllium and phosphorus atoms in the formation of surface chemical compounds on (101¯0) Re

Abstract

High-temperature joint adsorption has been studied of three different adsorbates, Si, Be, and P on the $\left(10\overline{1}0\right)$ Re face. All three adsorbates form surface compounds with the stoichiometry ReX, where X is Si, Be, and P. In joint adsorption, one of the adsorbates is displaced into the bulk, into the dissolved state. The processes are observed at a temperature sufficient for diffusion in the bulk, 1100–1300 K. Displacement occurs in an atom-to-atom mode, and it has a “cyclic nature”: silicon displaces phosphorus, beryllium displaces silicon, and phosphorus - beryllium.