EXAFS evidence for atom location in icosahedral TiZrNi and hydrogenated TiZrNi quasicrystals

A. Sadoc, J. Y. Kim, K. F. Kelton

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

We present results from the first extended X-ray absorption fine-structure studies in a Ti/Zr-based quasicrystal. The icosahedral Ti53Zr27Ni20 phase and an icosahedral Ti45Zr38Ni17 phase that also contains 1.7 hydrogen atoms for each metal atom were investigated. Experiments performed above the Ti, Ni and Zr K absorption edges have allowed to identify different types of atomic subshells around the Ti, Ni and Zr atoms. Significant differences are observed between these two quasicrystalline alloys, suggesting preferential sites for the hydrogen atoms.

Original languageEnglish
Pages (from-to)141-146
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume553
StatePublished - 1999 Jan 1
EventProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998' - Boston, MA, USA
Duration: 1998 Nov 301998 Dec 3

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