Tetrahedron dynamics in a series of approximant crystals to the icosahedral quasicrystal i-AlCuSc
The AlCuSc system features approximant phases to icosahedral quasicrystals. These phases have almost identical composition and consist of the same cluster building blocks (Tsai type clusters). The innermost shell of these clusters is a symmetry breaking tetrahedron which has been shown to reorient dynamically. The approximant phases differ in the exact arrangement of the Tsai type clusters, thus giving rise to different reorientation schemes of the tetrahedral shells. Therefore it becomes possible to investigate the direct influence of the cluster arrangement on the tetrahedron dynamics as well as the changes in the tetrahedron-tetrahedron correlations-mechanisms that come into play for stabilizing quasicrystals and approximants
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EUCHNER Holger; BEUTIER Guillaume; DE BOISSIEU Marc; GOLDMAN Alan; HIROTO Takanobu; LIU Dan; LORY Pierre Francois and ROLS Stephane. (2013). Tetrahedron dynamics in a series of approximant crystals to the icosahedral quasicrystal i-AlCuSc. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-01-371
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