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Adsorption of 0.5 monolayers (ML) of Sb on the Au(110) surface resulted in the formation of a c(2×2) surface reconstruction. Analysis of surface X-ray diffraction data by a direct method revealed the existence of an ordered substitutional surface alloy, with every other hollow site occupied by Au and Sb atoms. Quantitative conventional χ 2 refinement showed a contraction of 0.12±0.03Å in the...
The heating temperature dependence of Sc–O/W(100) surface properties and the effects of oxygen exposure on these properties were investigated. A (2×1)-(1×2)-Sc–O/W(100) surface having a high work function was formed by heating at ∼1500K with a sufficient provision of oxygen. Oxygen exposure was required for surface Sc atoms to form Sc–O complexes and diffuse into the W(100) substrate at ∼1500K. By...
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