Local structure of Co and Ni in decagonal AlNiCo investigated by polarized EXAFS
ETH Zurich & PSI Villigen, Laboratory for Neutron Scattering, Switzerland
2 Istituto Nazionale di Fisica della Materia (INFM), c/o ESRF GILDA CRG BP 220 38043 Grenoble, France
3 ETH Zurich, Laboratory of Crystallography, Switzerland
4 ETH Zurich, Institute of Applied Physics, Switzerland
Corresponding author: a Oksana.Zaharko@psi.ch
Revised: 20 October 2000
Published online: 15 January 2001
The local structure of cobalt and nickel in single crystals of decagonal quasicrystals with composition and have been studied by polarized EXAFS. Significant differences between the Ni and Co local environments have been detected. The effective absence of the 4 Å periodicity along the decagonal axis in these QCs is confirmed and indications about its reasons are presented.
PACS: 61.44.Br – Quasicrystals / 61.10.Ht – X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001