Modelling the atomic structure of Al92U8 metallic glass

S. Michalik, J. Bednarcik, P. Jóvári, V. Honkimäki, A. Webb, H. Franz, E. Fazakas, L. K. Varga

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The local atomic structure of the glassy Al92U8 alloy was modelled by the reverse Monte Carlo (RMC) method, fitting x-ray diffraction (XRD) and extended x-ray absorption fine structure (EXAFS) signals. The final structural model was analysed by means of partial pair correlation functions, coordination number distributions and Voronoi tessellation. In our study we found that the most probable atomic separations between Al-Al and U-Al pairs in the glassy Al92U8 alloy are 2.7 Å and 3.1 Å with coordination numbers 11.7 and 17.1, respectively. The Voronoi analysis did not support evidence of the existence of well-defined building blocks directly embedded in the amorphous matrix. The dense-random-packing model seems to be adequate for describing the connection between solvent and solute atoms.

Original languageEnglish
Article number404209
JournalJournal of Physics Condensed Matter
Volume22
Issue number40
DOIs
Publication statusPublished - Oct 13 2010

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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