Phys. Rev. Lett. 57, 1444–1447 (1986)Systematics of Disorder in Quasiperiodic MaterialReceived 21 April 1986; published in the issue dated 22 September 1986 We report new x-ray scattering data on AlMn alloys. None of our samples are perfect quasicrystals; all have finite-width x-ray peaks. Specific preparation techniques lead to samples with peak widths which correlate strongly with G⊥ (phason momentum). We show that the data are consistent with either frozen-in phason strain or random icosahedral packing. These two models predict surprisingly similar but potentially distinguishable scattering widths, differing in their detailed dependence on G⊥. © 1986 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.57.1444
DOI:
10.1103/PhysRevLett.57.1444
PACS:
61.50.Em, 61.55.Hg
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