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Phys. Rev. B 81, 020201(R) (2010) [4 pages]

Solution growth of a binary icosahedral quasicrystal of Sc12Zn88

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P. C. Canfield1,2,*, M. L. Caudle2, C.-S. Ho1,†, A. Kreyssig1,2, S. Nandi1,2, M. G. Kim1,2, X. Lin1,2, A. Kracher1, K. W. Dennis1, R. W. McCallum1,3, and A. I. Goldman1,2,‡
1Ames Laboratory, U.S. DOE, Iowa State University, Ames, Iowa 50011, USA
2Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
3Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA

Received 13 October 2009; published 8 January 2010

We report the discovery of a 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. The discovery of i-Sc12Zn88 suggests that a re-examination of binary phase diagrams at compositions close to crystalline approximant structures may reveal other binary quasicrystalline phases.

© 2010 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.81.020201
DOI:
10.1103/PhysRevB.81.020201
PACS:
61.44.Br, 81.10.Fq, 81.30.Bx

*canfield@ameslab.gov

†Present address: Department of Physics, University of California, Berkeley.

‡goldman@ameslab.gov

 
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