Document Type

Article

Publication Date

4-5-1999

Journal or Book Title

Physical Review Letters

Volume

82

Issue

14

First Page

2904

Last Page

2907

DOI

10.1103/PhysRevLett.82.2904

Abstract

We have observed dynamical diffraction in the [[(02402̅ 4) and [[(04604̅ 6) reflections of the icosahedral quasicrystal AlPdMn in the back-reflection geometry ( θB = 90°). The x-ray fluorescence from the Al and Pd atoms exhibits strong standing wave behavior, similar to that observed in crystalline materials. The data indicate a long-range order of each species of atoms, with the coherent positions attributable to distributions of the Al and Pd, which we compare to a centrosymmetric model. We observe deviations from the model which imply small departures from inversion symmetry along the twofold symmetry axis and from the expected coherent fractions for Al.

Comments

This article is from Physical Review Letters 82 (1999): 2904–2907, doi:10.1103/PhysRevLett.82.2904.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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