Title of article
Equilibrium faceting formation in vicinal Al2O3 (0001) surface caused by annealing
Author/Authors
Verre، نويسنده , , R. and Sofin، نويسنده , , R.G.S. and Usov، نويسنده , , V. and Fleischer، نويسنده , , K. and Fox، نويسنده , , D. and Behan، نويسنده , , G. and Zhang، نويسنده , , H. and Shvets، نويسنده , , I.V.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2012
Pages
6
From page
1815
To page
1820
Abstract
We report on a heat-induced transformation of the surface of α-alumina (0001) crystals which have an off-cut in the [1 2 ¯ 10] direction. Annealing the crystal causes the surface to transform into a regular array of (0001) and (1 2 ¯ 16) 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.
Keywords
Sapphire , Faceting , equilibrium state , High temperature annealing
Journal title
Surface Science
Serial Year
2012
Journal title
Surface Science
Record number
1692481
Link To Document