Discovery of a binary icosahedral quasicrystal in Sc${}_{1}2$Zn${}_{8}8$

Abstract

We report the discovery of a new binary icosahedral phase in a Sc-Zn alloy obtained through solution-growth, producing millimeter-sized, facetted, single grain, quasicrystals that exhibit different growth morphologies, pentagonal dodecahedra and rhombic triacontahedra, under only marginally different growth conditions. These two morphologies manifest different degrees of quasicrystalline order, or phason strain. The discovery of i-Sc${}_{1}2$Zn${}_{8}8$ suggests that a reexamination of binary phase diagrams at compositions close to crystalline approximant structures may reveal other, new binary quasicrystalline phases.

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References in corpus (2)

• A crystallographic phase transition within the magnetically ordered state of Ce_2Fe_17
• New group of stable icosahedral quasicrystals: structural properties and formation conditions

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