A new crystalline phase related to decagonal quasicrystals with non-central symmetry in Al-Co-Pd alloys

Kunio Yubuta, Wei Sun, Kenji Hiraga

研究成果: Article査読

17 被引用数 (Scopus)

抄録

A new crystalline phase, related to decagonal quasicrystals with non-central symmetry, is found in conventionally solidified Al70Co20Pd10and Al73Co22Pd5alloys. The new crystalline phase, which is called a W-phase hereafter, has an orthorhombic structure with lattice parameters a = 0.82nm, b = 2.06nm and c = 2.35 nm, and the space group Pmn21(No. 31). From electron diffraction and high-resolution electron microscopy observations of the W-phase, we propose a tentative structural model, which is constructed by modifying the structure of an Al-Ni-Co decagonal quasicrystal. A non-central symmetric decagonal quasicrystal with 0.4 nm periodicity is found in rapidly solidified Al70Co20Pd10and Al73Co22Pd5alloys. The structural relationships between the W-phase and decagonal quasicrystal are discussed.

本文言語English
ページ(範囲)273-284
ページ数12
ジャーナルPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
75
1
DOI
出版ステータスPublished - 1997 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 材料科学(全般)
  • 凝縮系物理学
  • 物理学および天文学(その他)
  • 金属および合金

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