On the possible types of quasicrystal structures

Journal Article · Wed May 01 04:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(95)00637-0· OSTI ID:233883

Divinski, S V ^[1]

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1. National Academy of Sciences, Kiev (Ukraine). Inst. of Metal Physics

The recent discovery of electron diffraction patterns of an Al-Mn alloy with icosahedral symmetry which is forbidden in crystalline symmetry brought on a new concept of the quasiperiodic lattice with a long-range orientational order and without translational order. Quasicrystals are objects with strong (and unusual) orientational order and without translational one. Instead of the translational order one may consider a quasi-periodicity. From the author`s point of view, there are no limitations, apart from the problems of stability, for existence of the quasicrystals with routine lattice symmetry, say with the 3-fold or 4-fold axes, and, consequently, with a translational order and with a presence of additional phason modes. This paper deals with an analysis of such cases.

• OSTI ID: 233883
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 9 Vol. 34; ISSN 1359-6462; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CONFIGURATION
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
DEFECTS
ELECTRON DIFFRACTION
MATHEMATICAL MODELS
METALS
ORDER PARAMETERS
ORIENTATION
SYMMETRY