Systematic study of the dolomite (104) surface by bimodal dynamic force microscopy in ultra-high vacuum.
Nanotechnology
; 24(5): 055702, 2013 Feb 08.
Article
em En
| MEDLINE
| ID: mdl-23307038
ABSTRACT
We have investigated the morphology and structure of dolomite MgCa(CO(3))(2)(104) surfaces by bimodal dynamic force microscopy with flexural and torsional resonance modes in ultra-high vacuum at room temperature. We found that the surface slowly decomposes by degassing CO(2) in a vacuum and becomes covered by amorphous clusters, presumably MgO and CaO. By choosing an optimal sample preparation procedure (i.e. cleaving in a vacuum and mild annealing for stabilizing clusters for a short time), atomically clean surfaces were obtained. The complex tip-sample interaction, arising from carbonate groups and Mg and Ca atoms of the surface, induces a large variety of atomic-scale imaging features.
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MEDLINE
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En
Ano de publicação:
2013
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Article