Quasicrystalline tenfold symmetry order in boron compounds

Yoshinobu Miyazaki, Junpei Okada, Eiji Abe, Yoshihiko Yokoyama, Kaoru Kimura

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8 Citations (Scopus)


We report the first quasicrystalline boride formed in a rapidly-solidified B40Ti12Ru48 alloy, whose diffraction pattern clearly reveals a tenfold rotation axis of decagonal symmetry. The local structure appears to be significantly deviated from an ideal quasicrystal, but the long-range bond-orientationalorder restricted by linkages between the robust unit-clusters has successfully generated the apparent 10-fold-symmetric Bragg peaks. This may be attributed to an extreme case of random-tiling quasicrystals, which enable the occurrence of local tiling disorders to account for entropy.

Original languageEnglish
Article number073601
JournalJournal of the Physical Society of Japan
Issue number7
Publication statusPublished - 2010 Jul


  • Aperiodic structure
  • Boride
  • Boron
  • Electron diffraction
  • Melt quenching
  • Quasicrystal
  • Scanning transmission electron microscopy


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