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Systematic study of the dolomite (104) surface by bimodal dynamic force microscopy in ultra-high vacuum

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Kawai, Shigeki and Pina Martínez, Carlos Manuel and Bubendorf, Alexander and Fessler, Gregor and Glatzel, Thilo and Gnecco, Enrico and Meyer, Ernest (2013) Systematic study of the dolomite (104) surface by bimodal dynamic force microscopy in ultra-high vacuum. Nanotechnology, 24 (55702). pp. 1-9. ISSN 0957-4484

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Official URL: https://iopscience.iop.org/article/10.1088/0957-4484/24/5/055702/meta



Abstract

We have investigated the morphology and structure of dolomite MgCa.CO3/2.104/ 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 CO2 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- cale imaging features.


Item Type:Article
Uncontrolled Keywords:Dolomite
Subjects:Sciences > Geology > Mineralogy
ID Code:55131
Deposited On:29 Apr 2019 08:25
Last Modified:29 Apr 2019 08:25

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