Transient ordering states in decagonal Al-Co-Ni and Al-Cu-Co-Si phases

Weidner, Eveline; Frey, Friedrich und Hradil, K. (2001): Transient ordering states in decagonal Al-Co-Ni and Al-Cu-Co-Si phases. In: Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, Bd. 81, Nr. 10: S. 2375-2389

Abstract

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 interpretation 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.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Geowissenschaften > Department für Geo- und Umweltwissenschaften > Kristallographie und Materialwissenschaft
• Themengebiete: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
• Sprache: Englisch