Water Ordering on the Magnetite Fe₃O₄ Surfaces.

ABSTRACT: The interaction of water with the most prominent surfaces of Fe₃O₄, (001) and (111), is directly compared using a combination of temperature-programmed desorption, temperature-programmed low energy electron diffraction (TP LEED), and scanning probe microscopies. Adsorption on the (√2 × √2)R45°-reconstructed surface of Fe₃O₄(001) is strongly influenced by the surface reconstruction, which remains intact at all coverages. Close to the completion of the first monolayer, however, the ad-layer adopts a longer-range (2 × 2) superstructure. This finding is discussed in the context of a similar (2 × 2) superstructure recently observed on the (111) facet, which exists over a significantly larger range of temperatures and coverages. In both cases, the long

SUBMITTER: Zaki E 

PROVIDER: S-EPMC6550440 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature