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Arrangement of rotational domains of the (root 31 x root 31) R +/- 9 degrees reconstruction of Al2O3(0001) revealed by non-contact AFM

Abstract:

Non-contact atomic force microscopy using a needle sensor with a phase shift feedback mechanism has been used to characterise Al2O3(0 0 0 1) surfaces prepared by annealing in 10-4 mbar partial pressures of oxygen. The preparation procedure leads to flat terraces with lengths in excess of 1000 nm and widths of order 40 nm separated by c/6 steps. The unit cell of the (√31 × √31) R ± 9° reconstruction is resolved, with a single rotational domain on each of the terraces. The 18° rotation between ...

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Inorganic Chemistry
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Role:
Author
Journal:
SURFACE SCIENCE
Volume:
515
Issue:
2-3
Pages:
337-343
Publication date:
2002-09-01
DOI:
ISSN:
0039-6028
URN:
uuid:8948f18a-04c4-4af6-9fce-33b6dc80fc4a
Source identifiers:
38331
Local pid:
pubs:38331
Language:
English
Keywords:

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