Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5426225 | Surface Science | 2007 | 6 Pages |
Abstract
Evolution of the (0 0 0 1) α-Al2O3 surface morphology upon annealing was studied using atomic force microscopy. The annealing protocol included temperatures of 1200 and 1500 °C and different time. Vicinal Al2O3 (0 0 0 1) surfaces annealed at 1200 °C exhibit initial localized step coalescence that evolves into terrace-and-step with island morphology that persists for several hours. Annealing at 1500 °C results in initial step coalescence on a global scale, and yields a terrace-and-step morphology with an indication of step bunching after longer annealing times.
Keywords
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Primož Rebernik RibiÄ, Gvido Bratina,