Equilibrium faceting formation in vicinal Al2O3 (0001) surface caused by annealing
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2012-07Citation:
Ruggero verre, Equilibrium faceting formation in vicinal Al2O3 (0001) surface caused by annealing, Surface Science, 606, 23-24, 2012, 1815 - 1820Download Item:
al2o3.pdf (Accepted for publication (author's copy) - Peer Reviewed) 1.058Mb
Abstract:
We report on a heat-induced transformation of the surface of ?-alumina (0001) crystals which have an off-cut in the [1-210] direction. Annealing the crystal causes the surface to transform into a regular array of
(0001) and (1-216) facets. The resultant faceted morphology represents the equilibrium state of the system.
It is demonstrated that the average terrace periodicity is determined by the annealing temperature. Possible causes for the surface rearrangement are also discussed. This method could be used for producing templates
with controlled periodicity for growth of nanostructure arrays.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
06/IN.1/I91
Author's Homepage:
http://people.tcd.ie/fleisckhttp://people.tcd.ie/ivchvets
http://people.tcd.ie/hozhang
http://people.tcd.ie/usovv
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PUBLISHED
Author: FOX, DANIEL; SHVETS, IGOR; FLEISCHER, KARSTEN; ZHANG, HONGZHOU; USOV, VICTOR; VERRE, RUGGERO; SOFIN, SUMESH; BEHAN, G.
Publisher:
Elsevier B.V.Type of material:
Journal ArticleCollections:
Series/Report no:
Surface Science;606;
23-24;
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Full text availableKeywords:
sapphire, al2o3, faceting, Equilibrium stateLicences: