Scanning tunneling microscopy (STM) has been used to investigate the structure of the TiO2 anatase (100) surface. Natural single crystals of anatase were employed; and after several cycles of sputtering and annealing at T = 450 °C, the TiO2(100) surface was free of impurities, and reconstructed to a (1×n) termination. No evidence for point defects was found in the atomic resolution STM images. The STM results were accounted for on the basis of a surface structure model in which (101)-oriented microfacets run along the anatase  direction.
Reprints available from U. Diebold (diebold).
Users with online access to Surface Science can load the article from the publisher.