Czochralski Growth of Decagonal AlCoNi Quasicrystals from Al-rich Solution |
| G. Meisterernst, B. Bauer and P. Gille
Ludwig-Maximilians-Universität München, Department of Earth and Environmental Sciences, Crystallography section, Theresienstr. 41, D-80333 Munich, Germany |
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| Czochralski growth of cm size decagonal AlCoNi single crystals from Al-rich high-temperature solutions is described using native seeds oriented parallel to all symmetrically different crystal directions. Morphological observations allow first hints with respect to anisotropic growth rates. But only classical detachment experiments according to the original idea of Jan Czochralski reveal quantitative results of kinetically limited growth rates. Geometric conditions of wetted plane interfaces as well as aspects of constitutional supercooling affect the detachment experiments. Thus, in only one specific orientation of the decagonal quasicrystal quantitative data for the maximum growth rate could be obtained. |
DOI: 10.12693/APhysPolA.124.344 PACS numbers: 61.44.Br, 81.10.Aj |