Abstract
We have measured 27Al, 65Cu and 59Co spin-echo spectra for Al70CuXCo30-X(X=6, 12, 15) Al73Co27 and Al76.5Co23.5 decagonal quasicrystals and for Al76.5Co23.5 monoclinic compound. The line shape and peak shift suggest different local atomic configuration in these phases. It seems that the Al atoms make a quasicrystalline skeleton in the decagonal phase, and the Co atoms also enter symmetric sites three dimensionally. On the other hand, the Cu atoms occupy asymmetric sites characteristic of the decagonal phase. For the Al76.5Co23.5 monoclinic compound, the Al atoms occupy the one crystallographic site but the Co atoms occupy three different sites whereas the decagonal phase has a less metallic Co atom among those sites.
Original language | English |
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Pages (from-to) | 219-223 |
Number of pages | 5 |
Journal | Science Reports of the Rerearch Institutes Tohoku University Series A-Physics |
Volume | 42 |
Issue number | 1 |
Publication status | Published - 1996 Mar 1 |
Keywords
- Aluminum-copper-cobalt
- Decagonal quasicrystal
- Monoclinic structure
- Nuclear magnetic resonance
ASJC Scopus subject areas
- Condensed Matter Physics
- Metals and Alloys