Nature of oxygen at rocksalt and spinel oxide surfaces
| Autor: | W. McCarroll, Jong-Gyu Kim, D. L. Pugmire, Marjorie A. Langell |
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| Rok vydání: | 2001 |
| Předmět: |
Range (particle radiation)
Spinel Analytical chemistry Oxide chemistry.chemical_element Surfaces and Interfaces engineering.material Condensed Matter Physics medicine.disease_cause Oxygen Surfaces Coatings and Films Auger Metal chemistry.chemical_compound chemistry Transition metal visual_art visual_art.visual_art_medium engineering medicine Ultraviolet |
| Zdroj: | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 19:1977-1982 |
| ISSN: | 1520-8559 0734-2101 |
| DOI: | 10.1116/1.1349194 |
| Popis: | The chemical environment of oxygen in cobalt-containing metal oxides with compositions MxM(x−1)′O and MxM(3x−1)′O4 (M,M′=Mn,Ni,Co) has been studied by Auger, x-ray and ultraviolet photoelectron, and high resolution electron energy loss spectroscopies. While there is a single type of lattice oxygen in the bulk structure of simple rocksalt and spinel oxides, the nature of oxygen at the surface of the spinel oxides is considerably more complex. Photoemission from core oxygen states in these materials often shows multiple peaks and satellite structure which have been attributed to a range of intrinsic and extrinsic oxygen states. All of these 3d transition metal oxides show a single, intense O 1s core photoemission peak at approximately 529.6 eV. In the spinel materials, a second state at 531.2 eV is also observed and is shown to be intrinsic to the spinel surface and not a result of hydroxylation or other surface contaminant. Similar photoemission features in Fe3O4 were previously attributed to final state e... |
| Databáze: | OpenAIRE |
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