Cleavage faces of alkaline-earth fluorides studied by atomic force microscopy

Overney, R. M. and Haefke, H. and Meyer, E. and Guntherodt, H. J.. (1992) Cleavage faces of alkaline-earth fluorides studied by atomic force microscopy. Surface science, Vol. 277, H. 1-2 , L29-L33.

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Official URL: http://edoc.unibas.ch/dok/A5839516

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An atomic force microscopy (AFM) study of the cleavage faces of CaF2, SrF2 and BaF2 is presented. On the CaF2(111) surface the elementary cleavage structure with cleavage tips has been imaged. The step heights have been determined to be multiples of 0.31 nm, the projection length of the Burgers vector of the primary glide system. Atomic resolution has been achieved in step-free regions of cleavage faces. The hexagonal surface lattice with spacings of 0.38 nm corresponds to the unreconstructed bulk lattice. The 111 surfaces of SrF2 and BaF2 are characterized by a low density of parallel cleavage steps; cleavage tips are not observed. On SrF2 surfaces the formation of erosive holes has been documented by AFM.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer)
UniBasel Contributors:Meyer, Ernst
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:14 Sep 2012 07:17
Deposited On:14 Sep 2012 06:42

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