1984/11/12 by D. Shechtman, I. Blech, I. A. Blech +3 · 102 citations
Materials Science · Earth and Planetary Sciences · #Quasicrystal Structures and Properties #nanoparticles nucleation surface interactions #Solidification and crystal growth phenomena
paper · pdf · doi:10.1103/physrevlett.53.1951
We have observed a metallic solid (Al-14-at.%-Mn) with long-range orientational order, but with icosahedral point group symmetry, which is inconsistent with lattice translations. Its diffraction spots are as sharp as those of crystals but cannot be indexed to any Bravais lattice. The solid is metastable and forms from the melt by a first-order transition.