P. A. Heiney, P. A. Bancel, A. I. Goldman, and P. W. Stephens, Phys. Rev. B34, 6746-6751 (1986).
We rept extended x-ray absorption fine-structure measurements on the Mn and Ru K absorption edges in rapidly quenched icosahedral alloys of Al86Mn14, Al75.5Mn17.5 Ru4Si3, and Al75.5Mn15.5Ru6Si3, as well as the crystalline forms of Al6Mn and Al6Ru. In the icosahedral phase, we find an asymmetric distribution of Al atoms around Mn sites, containing at least two Al-Mn distances. The asymmetry becomes more pronounced with increasing Ru content. The Ru atomic environment apperas to include an additional very short Ru-Al or Ru-Si bond.
GO TO PAUL HEINEY'S PERSONAL WEB PAGE