Physics and Astronomy, Ames Laboratory
Journal or Book Title
Although quasicrystals form in a wide variety of ternary and quaternary metallic alloys, examples of stable binary icosahedral quasicrystals are quite rare. Indeed, it has been a decade since the discovery of icosahedral phases in Yb–Cd and Ca–Cd. We have discovered millimeter-sized facetted grains of i-Sc12Zn88 with icosahedral (pentagonal dodecahedral and rhombic triacontahedral) morphologies in solution-grown samples. Structural characterization of the bulk icosahedral phase was accomplished through single-grain high-energy X-ray diffraction. For both growth morphologies, all diffraction peaks could be indexed by a primitive (P-type) icosahedral phase. The two types of morphology do, however, present interesting differences in their respective degrees of quasicrystalline order.
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Goldman, Alan I.; Kreyssig, Andreas; Nandi, S.; Kim, M. G.; Caudle, M. L.; and Canfield, Paul C., "High-energy X-ray diffraction studies of i-Sc12Zn88" (2011). Physics and Astronomy Publications. 673.