New quasicrystals of alloys containings,p, anddelements

New quasicrystals are obtained in alloys containing s, p, and d elements (so-called PSD alloys): ${\mathrm{AuLi}}_3$ ${\mathrm{Al}}_6$, ${\mathrm{Zn}}_{17}$ ${\mathrm{Li}}_{32}$ ${\mathrm{Al}}_{51}$, ${\mathrm{Ga}}_{16}$ ${\mathrm{Mg}}_{32}$ ${\mathrm{Zn}}_{52}$, and ${\mathrm{Ag}}_{15}$ ${\mathrm{Mg}}_{35}$ ${\mathrm{Al}}_{50}$. Transmission electron microscopy and x-ray diffraction studies reveal that these PSD quasicrystals exhibit a unique peak-intensity modulation and packing density suggesting similar atomic decorations of the rhombohedron unit cells of three-dimensional Penrose tiling.