Icosahedral Quasicrystal Layer Observed on λ Phase in Al-Cu-Fe Alloy

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Icosahedral quasicrystals display irregular shape if it is embedded in bulk material. If it has free surface, it has well-defined facets, reflecting its unique 5-, 3-, and 2-fold rotational symmetries. In this study, an Al-Cu-Fe alloy with nominal composi
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