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The Stability of Icosahedral Cd-Yb

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Abstract

The stability of single-crystalline icosahedral Cd-Yb was investigated using X-ray diffraction methods in the temperature range 20 K ≤ T ≤ 900 K at ambient pressure and from ambient temperature to 873 K at about 9 GPa. Single-crystals remain stable at low temperatures and in the investigated HP-HT-regime. At high temperatures and ambient pressure, the quasicrystal decomposes. The application of mechanical stress at low temperatures yields to the same decomposition, the formation of Cd. A reaction of icosahedral Cd-Yb with traces of oxygen or water causing the decomposition seems reasonable, but a low-temperature instability of this binary quasi-crystal cannot be ruled out totally.

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Authors and Affiliations

  1. Laboratory of Crystallography, Department of Materials, Swiss Federal Institute of Technology, Zurich, CH-8092, Switzerland

    Günter Krauss, Sofia Deloudi, Andrea Steiner & Walter Steurer

  2. Ames Laboratory, Ames, IA, USA

    Amy R. Ross & Thomas A. Lograsso

Authors
  1. Günter Krauss
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  2. Sofia Deloudi
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  3. Andrea Steiner
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  4. Walter Steurer
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  5. Amy R. Ross
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  6. Thomas A. Lograsso
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Krauss, G., Deloudi, S., Steiner, A. et al. The Stability of Icosahedral Cd-Yb. MRS Online Proceedings Library 805, 80–85 (2003). https://doi.org/10.1557/PROC-805-LL1.8

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  • DOI: https://doi.org/10.1557/PROC-805-LL1.8

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