Chemical decoration in cubic approximant and quasicrystal in the Al-Cu-Fe system
Résumé
The local order in the Al--Cu--Fe quasicrystal and in two of its approximants has been investigated by extended X-ray absorption fine structure (EXAFS) studies at the Cu and Fe Kedges. The chemical occupation of the crystallographic sites in the 1/1 cubic α--Al55Si7Cu25.5Fe12.5 phase is revisited. From these results, a model for the chemical short--range order in the Al62.5Cu25.5Fe 12.5 quasicrystal is proposed.
Domaines
Physique Générale [physics.gen-ph]Origine | Fichiers produits par l'(les) auteur(s) |
---|
Loading...