| Autor: |
Marcatoma, J. Quispe, Landauro, C. V., Taquire, M., Ayala, Ch. Rojas, Yaro, M., Rodriguez, V. A. Peña |
| Předmět: |
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| Zdroj: |
Hyperfine Interactions; Jan2010, Vol. 195 Issue 1-3, p105-109, 5p |
| Abstrakt: |
Nanocrystalline Al64Cu23Fe13 icosahedral quasicrystal has been obtained by milling of solid quasicrystal precursors prepared by arc-melt. The local structure around Fe atoms was studied by Mössbauer spectroscopy using a quadrupole splitting distribution method. Mössbauer results of annealed and milled samples show the existence of a broadened distribution of Fe sites which is associated to intrinsic disorder. The structural characterization was determined using x-ray diffraction. The average grain-size of the nanostructured quasicrystal, obtained from the line broadening of the X-ray diffraction peaks, was estimated to be of the order of 10 nm for a sample milled by 5 h. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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