Faceting of the two-fold decagonal Al71.8Ni14.8Co13.4(00110) surface studied by He diffraction
Surface Science 511(1-3): 387-391
The two-fold decagonal-Al71.8Ni14.8CO13.4(001 (1) over bar0) surface is investigated by highly surface sensitive He atom scattering. The diffraction pattern shows that the topmost surface layer preserves a perfect quasi-crystal line ordering expected from the bulk. The surface is found to develop facets with (10000)-equivalent orientation, inclined by 18degrees to the original surface. The facets are of sufficient size to observe diffraction from them. The facet planes are identical to those identified in an as grown sample. (C) 2002 Elsevier Science B.V. All rights reserved.