DECAGONAL QUASI-CRYSTALS

The current understanding of the decagonal quasicrystal is presented h ere. Studies of the structure, morphology and the relationship of this quasicrystal to other quasicrystals and related crystals are reviewed . The production of very high-quality decagonal phase now makes it pos sible to study its structure and properties more reliably. Accurate in formation of the reciprocal lattice of decagonal phases with different periodicity is now available. Defects in the decagonal phases are als o being characterized. The study of the structural relationship of the decagonal quasicrystal to other quasicrystals and crystalline phases leads to a better understanding of the structure. The properties of th is phase, which shows anisotropy owing to its one-dimensional periodic ity, are of scientific interest and discussed here. (C) 1998 Elsevier Science Ltd.