Faceting of curved tungsten surface induced by palladium, A. Szczepkowicz, A. Ciszewski, Surf. Sci. 515 (2002) 441.

Abstract
The influence of a palladium adlayer on the surface topography of a needle-shaped tungsten crystal is studied using Field Ion Microscopy. When the curved surface is covered by palladium and annealed at 1000-1200 K, both macroscopic faceting and steplike microfaceting is observed. The macroscopic {110} and {211} crystal facets increase in size, {211} steplike microfacets are formed around <111> poles, {110} and {211} steplike microfacets are formed in <111> crystal zones. With the increase of annealing temperature the number of {211} microfacets decreases, while the macroscopic {211} facets increase in size. At 1300 K no faceting is observed because palladium desorbs thermally.

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