Ion-surface scattering measurements of the (110) surface of titanium dioxide.

Abstract

The (110) surface of TiO$\sb2$ is examined using a 9.92 keV oxygen ion beam. The positions of the peaks in the emitted ion energy spectrum are consistent with those predicted by ion-surface scattering theory for O$\sp{+}$-O and O$\sp{+}$-Ti collisions. Upon examination of the peaks present in the ion energy spectrum, information about the surface crystallographic structure can be determined. This includes studying the shadowing/blocking effects as the azimuthal and elevation angles are varied. Using this information the dimensions of the surface unit cell are found to be consistent with the bulk dimensions. The height of the oxygen rows that are present above the surface can also be determined and is found to be lower than predicted by the bulk.