Jach, T.
(2001),
Quasicrystal Element Correlations From X-Ray Standing Waves, Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
(Accessed March 5, 2025)
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Quasicrystal Element Correlations From X-Ray Standing Waves
Published
Author(s)
Abstract
X-ray standing waves associated with dynamical diffraction in perfect crystals are also present during diffraction in high-quality quasicrystals. The fluorescence observed from quasicrystals while scanning the rocking curve of a particular Bragg reflection shows an identical form to that observed from periodic planes in a perfect crystal. In this case, however, the coherent fraction is the value of a correlation function: the Fourier component of a given elemental distribution at the wavevector associated with the Bragg peak. We show, using a model for Al-Pd-Mn, how the observed value for the coherent position at a given reflection is a sensitive indicator of the centrosymmetry of the distribution, and the observed value for the coherent fraction is a test of the elemental distribution predicted from the model.Citation
Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
Volume
294-296
Pub Type
Journals
Keywords
AlPdMn, dynamical diffraction, quasicrystal, x-ray standing wave
Citation
Issues
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Created January 1, 2001, Updated February 19, 2017