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E. Weidner, F. Frey, K. Hradil:
"Transient ordering states in decagonal Al-Co_ni and Al-Cu-Co-Si phases";
Philosophical Magazine, A81 (2001), 10; 2375 - 2389.

X-ray diffraction patterns of decagonal Al70Co15Ni15, Al72Ni12Co16 and Al62Cu20Co15Si3 show, apart from `sharp´ reflections, prominent diffuse maxima and diffuse streaks. From an analysis of high-resolution synchrotron data, arguments are given in favour of a more uniform interpretations. of a more uniform interpreatation of all these phenomena in terms of linear phason strain and phason fluctuations. Thus structural modifications, including one-dimensional quasicrystalline domains and periodic domains (approximants) can be conveniently described as transient ordering states, depending on temperature and composition

http://dx.doi.org/10.1080/01418610110038457