Metallic Phase with Long-Range Orientational Order and No Translational Symmetry

@inproceedings{Shechtman2011MetallicPW,
  title={Metallic Phase with Long-Range Orientational Order and No Translational Symmetry},
  author={Daniel Shechtman and Ilana Blech},
  year={2011}
}
We report herein the existence of a metallic solid which diffracts electrons like a single crystal but has point group symmetery rn35 (icosahedral) which is inconsistent with lattice translations. If the specimen is rotated through the angles of this point group (Fig. 1), selected-area electron diffraction patterns clearly display the six fivefold, ten threefold, and fifteen twofold axes characteristic' of icosahedral symmetry (Fig. 2). Grains up to 2 p, m in size with this structure form in… CONTINUE READING