Abstract
Abstract The structure of barium oxide films on the (0001) face of rhenium has been investigated by the techniques of low energy electron diffraction (LEED) and contact potential difference method in a wide range of coverages. The changes in surface structure of the BaO films have been observed after annealing at various temperatures. It was shown that the structure and orientation of the films depended essentially on the interaction of barium oxide with the substrate. The result of this interaction was equivalent to the oxidation of the (0001) face of rhenium. This fact was confirmed by experiments with the adsorption of BaO films on an oxidized substrate. The structures observed after heating to high temperatures (900°–1000°C) seem to be formed by the products of chemical interaction of barium oxide with rhenium (rhenates).
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