Steps and the structure of the (0001) α-alumina surface

Autor:	Jason R. Heffelfinger, Michael W. Bench, C. B. Carter
Rok vydání:	1997
Předmět:	Faceting Aluminium oxides Crystallography Annealing (metallurgy) Atomic force microscopy Chemistry Materials Chemistry Surface structure Surfaces and Interfaces Condensed Matter Physics Vicinal Surfaces Coatings and Films
Zdroj:	Surface Science. 370:L168-L172
ISSN:	0039-6028
DOI:	10.1016/s0039-6028(96)01123-5
Popis:	The initial stages of facet formation on the (0001) α-alumina surface are explored through annealing vicinal single crystals for different lengths of time and characterizing the surface with atomic force microscopy. Faceting of the (0001) surface begins with the formation of 0.2 nm or ∼ c 6 high steps ( c = 1.3 nm). These steps show a preference for existing as pairs; the pairs then bunch together and form facets which are typically multiples of c in height. In this fashion, single facets and faceted domains initially exist together on the same surface. A faceted terrace-and-step morphology develops as the facet domains coalesce with longer annealing times.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9ab93c318208017dc54fdffe4be493df https://doi.org/10.1016/s0039-6028(96)01123-5 Zobrazit plný text záznamu Full Text from ScienceDirect