Structure analysis of approximants for quasicrystals with three-dimensional electron diffraction tomography

Cluster-packing geometry for Al-based F-type icosahedral alloys

A highly stable, periodic approximant to Al-based F-type icosahedral quasicrystals, i-Al–Pd–TM (TM = transition metals), has been synthesized for the first time. A thorough investigation of the crystal structure leads to a universal description of a broader class of complex crystal structures closely related to the quasicrystals.