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Article
Dynamical Diffraction and X-Ray Standing Waves from Atomic Planes Normal to a Twofold Symmetry Axis of the Quasicrystal AlPdMn
Physical Review Letters
Document Type
Article
Disciplines
Publication Date
4-5-1999
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.
Copyright Owner
American Physical Society
Copyright Date
1999
Language
en
File Format
application/pdf
Citation Information
Terrence Jach, Y. Zhang, R. Colella, M. de Boissieu, et al.. "Dynamical Diffraction and X-Ray Standing Waves from Atomic Planes Normal to a Twofold Symmetry Axis of the Quasicrystal AlPdMn" Physical Review Letters Vol. 82 Iss. 14 (1999) p. 2904 - 2907 Available at: http://works.bepress.com/thomas_lograsso/22/
This article is from Physical Review Letters 82 (1999): 2904–2907, doi:10.1103/PhysRevLett.82.2904.