Abstract
Grains of PbS deposited on Mg (00.1) surfaces prepared by the gas evaporation technique are observed by using high resolution electron microscopy. Among the grains with various orientations, those with 100 and 110 orientations are observed. In the former grain, the contrast arising from the forbidden 110 reflection for PbS can be obtained due to the thin thickness. Two kinds of adsorption structures, a pseudomorphic structure and a new arrangement of Pb atoms, are found. An attempt to determine adsorption sites of the deposit is also carried out by comparison between the electron micrograph and the simulated images.
