High resolution X-ray and neutron diffraction of super- and disorder in decagonal Al-Co-Ni

E. Weidner, K. Hradil, F. Frey, M. De Boissieu, A. Létoublon, W. Morgenroth, H. G. Krane, M. Capitan, A. P. Tsai

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    Synchrotron measurements at DESY and ESRF of decagonal quasicrystals with the nominal composition Al70Co15Ni15 and Al72Co16Ni12, show that Bragg reflections with high |Hi*| values are surrounded by up to four weak subsidiary peaks. The positions of these additional peaks depend solely on the position of the Bragg reflection in the reciprocal perpendicular subspace and can be explained by a linear phason strain model. This model sheds new light on the current superorder models and is a further step towards an understanding of the real structures of decagonal quasicrystals.

    Original languageEnglish
    Pages (from-to)308-314
    Number of pages7
    JournalMaterials Science and Engineering A
    Volume294-296
    DOIs
    Publication statusPublished - 2000 Dec 15

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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