Abstract
After annealing at 1273 K in UHV chamber to remove adsorbed molecule, the surface crystal structure and the composition of polycrystalline Fe1−xO were analyzed at room temperature using STM, LEED and AES. The Fe1−xO sample was prepared by oxidizing an polycrystalline electrolytic iron strip. The Fe1−xO surface consists of facets, where many steps like zig-zag shape are arranged. The mesh-like structure, of which periodicity is about 0.8–1.3 nm, was observed on the terrace. The facets are (001) planes of Fe1−xO, and the step direction is ‹110› by LEED measurement. The mesh-like structure is considered as the defect clusters derived from nonstoichiometry.
