S.G.J. Mochrie, A.R. Kortan, et al.
Physical Review Letters
Faceted dendrites of icosahedral Al6Li3Cu have been studied by high-resolution x-ray scattering. The samples display long-range icosahedral symmetry both in their diffraction patterns and in their macroscopic morphology. Despite the appearance of welldefined facets, the samples have a high degree of atomic disorder. The Bragg peaks have symmetry-dependent shapes and widths that scale linearly with G⊥ (phason momentum). The peak widths are surprisingly similar to those found in icosahedral Al-Mn-Si alloys in both their absolute magnitude and their dependence on G ⊥. The origin of these features in models for the icosahedral phase is discussed.
S.G.J. Mochrie, A.R. Kortan, et al.
Physical Review Letters
P.A. Heiney, P.W. Stephens, et al.
Surface Science
P.A. Heiney, P.A. Bancel, et al.
Physical Review Letters
Eric Courtens, T.F. Rosenbaum, et al.
Physical Review B