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Crystal Structure of Hexagonal Phases and Its Relation To Icosahedral Quasicrystalline Phase in Zn-Mg-RE (RE = Rare Earth) System

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Abstract

A relationship between hexagonal phases in the Zn-Mg-RE (RE=rare earth) system and icosahedral quasicrystalline phase is discussed. There are three hexagonal phases in the vicinity of Zn6Mg3RE1 which are related with a lattice parameters by a ratio 3:5:7 but with approximately the same c parameters. A structural model for the phase with medium a lattice parameter is proposed based on the structures of the other two phases recently determined. We also show a preliminary result of X-ray diffraction study of the Zn-Mg-Ho icosahedral phase.

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Authors and Affiliations

  1. Natonal Research Institute for Metals, Tsukuba, Japan

    Hiroyuki Takakura, T. J. Sato & A. P. Tsai

  2. Core Research in Evolutional Science and Technology, Japan Science and Technology Corporation, Kawaguchi, Saitama, Japan

    Hiroyuki Takakura

  3. National Institute for Research in Inorganic Materials, Tsukuba, Japan

    A. Sato & A. Yamamoto

Authors
  1. Hiroyuki Takakura
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  2. T. J. Sato
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  3. A. P. Tsai
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  4. A. Sato
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  5. A. Yamamoto
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Correspondence to Hiroyuki Takakura.

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Takakura, H., Sato, T.J., Tsai, A.P. et al. Crystal Structure of Hexagonal Phases and Its Relation To Icosahedral Quasicrystalline Phase in Zn-Mg-RE (RE = Rare Earth) System. MRS Online Proceedings Library 553, 129–134 (1998). https://doi.org/10.1557/PROC-553-129

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  • DOI: https://doi.org/10.1557/PROC-553-129

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