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ELECTRONIC EXCITATIONS AT OXYGEN DEFICIENT TIO2(110) SURFACES - A STUDY BY EELS

Abstract:

TiO2(110) surfaces with controlled oxygen deficiency introduced by 160 eV electron bombardment have been studied by XPS and EELS. Stoichiometry was monitored by the growth of core peaks due to Ti3+ states in XPS. Oxygen desorption is characterised by an initial cross section of 3 × 10-21 cm2 that decreases with increasing oxygen loss, tending toward a limiting composition Ti4O7. The oxygen deficient surfaces display sub-bandgap excitations in electronic EELS, whilst in the vibrational region ...

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Publication status:
Published

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Journal:
SURFACE SCIENCE
Volume:
180
Issue:
1
Pages:
263-278
Publication date:
1987-02-05
DOI:
ISSN:
0039-6028
URN:
uuid:fb8dc610-b002-4f8e-9ef4-00ca3196dc6d
Source identifiers:
42624
Local pid:
pubs:42624
Language:
English

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