Metallic Phase with Long-Range Orientational Order and No Translational Symmetry
Abstract
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 1984
- DOI:
- 10.1103/PhysRevLett.53.1951
- Bibcode:
- 1984PhRvL..53.1951S
- Keywords:
-
- Aluminum Alloys;
- Crystallization;
- Lattice Parameters;
- Metal Crystals;
- Electron Diffraction;
- Icosahedrons;
- Manganese Alloys;
- Melts (Crystal Growth);
- Metastable State;
- Solid-State Physics;
- 61.50.Em;
- 61.55.Hg;
- 64.70.Ew