Structure of the Al-Rh-Cu decagonal quasicrystal: I. A unit-cell approach

X. Z. Li, K. Hiraga, K. Yubuta

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

Structure of the Al-Rh-Cu decagonal quasicrystal has been studied by high-resolution electron microscopy. The high-resolution structure image shows an aperiodic tiling composed of three kinds of subunits, namely flattened hexagon, crown and five star. Therefore, a structural model of the Al-Rh-Cu decagonal quasicrystal has been constructed in a unit-cell approach, in which the atom arrangements in the subunits have been proposed. It is known that the phase has two layers in a period of 0.4 nm along the unique tenfold axis according to the previous study by electron diffraction method. The ideal model of the Al-Rh-Cu decagonal quasicrystal is proposed as periodic stacking of the layers with quasiperiodic tessellation of the three kinds of subunits, in each layer the two-colour Penrose tiling is obtained if different atom decorations for the same shape subunits are distinguished by white and black colours. Calculated images reproduces well the contrast features of the observed images, which means that the present model is basically correct. Structural relationship between the Al-Rh-Cu decagonal quasicrystal and the previously reported Al-Ni-Co decagonal quasicrytsal, which has also a period of 0.4 nm, has also been discussed.

本文言語英語
ページ(範囲)330-337
ページ数8
ジャーナルPhysica B: Condensed Matter
240
4
DOI
出版ステータス出版済み - 10 1997
外部発表はい

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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