Abstract
The surface topography of anion-deficient, and nominally stoichiometric. terbium oxides has been characterised at the atomic level by high resolution electron microscopy using the surface profile imaging technique. The predominant surface was found to be (111) which generally formed well-ordered terraces: other surfaces such as (100) and (022) were less prevalent and usually quite irregular. Surface modifications were also observed in real-time which were face-dependent, and the rapidity of the associated atomic arrangements appeared to correlate with the number of oxygen atom positions at the different surfaces.
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