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. 1988 Jun;85(11):3666–3669. doi: 10.1073/pnas.85.11.3666

Icosahedral quasicrystals as twins of cubic crystals containing large icosahedral clusters of atoms: The 1012-atom primitive cubic structure of Al6CuLi3, the C-phase Al37Cu3Li21Mg3, and GaMg2Zn3

Linus Pauling 1
PMCID: PMC280278  PMID: 16593929

Abstract

Single-grain precession x-ray diffraction photographs of Al6CuLi3 have been successfully indexed on the basis of icosahedral twinning of cubic crystals with a 1012-atom primitive cubic unit with edge 25.70 Å, giving support to the proposal that the so-called icosahedral quasicrystals are twins of crystals containing eight large icosahedral clusters in the β-W arrangement. In this compound two of the clusters consist of 104 atoms and six consist of 136 atoms, with 24 atoms shared. The same structure is assigned to the C-phase, Al37Cu3Li21Mg3, and to GaMg2Zn3. A theory of icosahedral quasicrystals and amorphous metals is described.

Keywords: amorphous metals, theory of icosahedral quasicrystals, intensity of diffraction maxima

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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