Sequential oxygen atom chemisorption on surfaces of small iron Clusters

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.4853· OSTI ID:286014

Wang, L; Wu, H; Desai, S R ^[1]

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1. Department of Physics, Washington University, Richland, Washington 99352 (United States)

We report photoelectron spectra of iron oxide clusters, Fe{sub {ital x}}O{sub {ital y}}{sup {minus}} ({ital x}=1{endash}4, {ital y}=1{endash}6). For a given {ital x}, we find that the electron affinity increases with the number of O atoms, consistent with an increasing degree of oxidation. The results are interpreted based on charge transfer interactions between the Fe{sub {ital x}} clusters and the O atoms, and provide key information about the oxide cluster structures, in which each O atom is suggested to locate on the surface of the clusters for the {ital x}=3 and 4 series. These clusters provide novel model systems to understand the electronic structure of bulk iron oxides. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Pacific Northwest National Laboratory
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 286014
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AFFINITY
CHEMISORPTION
ELECTRONIC STRUCTURE
ELECTRONS
IRON OXIDES
MOLECULAR CLUSTERS
OXIDATION
OXYGEN
PHOTOELECTRON SPECTROSCOPY
SURFACES