Structure ofTiO2Rutile (110) (1 × 1) from Ion Scattering Measurements

B. Hird, R. A. Armstrong and J. A. Seel
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B. Hird: Ottawa-Carleton Institute for Physics, University of Ottawa Campus, Ottawa, Ontario, K1N 6N5, Canada
R. A. Armstrong: Ottawa-Carleton Institute for Physics, University of Ottawa Campus, Ottawa, Ontario, K1N 6N5, Canada
J. A. Seel: Ottawa-Carleton Institute for Physics, University of Ottawa Campus, Ottawa, Ontario, K1N 6N5, Canada

Surface Review and Letters (SRL), 1998, vol. 05, issue 01, 309-313

Abstract: 9.22 keV oxygen ion scattering has been used to examine the (110) surface structure ofTiO2rutile. Peaks in the spectrum of the emitted ions at 45° and at 77° are found at the energies expected forO+–TiandO+–Ocollisions by surface atoms. Surface preoparation to optimize the1 × 1structure involved annealing a previously sputtered surface to 600°C, first in10-6Torr ofO2, and then in UHV. Azimuthal and elevation angular variations of the yields for low incidence angles show shadowing effects. Preliminary analysis seems to be consistent with the (1 × 1) model of a complete surface layer, with rows of oxygen atoms above on the titanium bridge sites. The data suggests that our sample preparation produces incomplete rows of above-surface oxygen atoms, or frequent steps.

Date: 1998
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DOI: 10.1142/S0218625X98000578

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