Role of the triclinic Al2Fe structure in the formation of the Al5Fe2-approximant

Akihiko Hirata, Yuichiro Mori, Manabu Ishimaru, Yasumasa Koyama

研究成果: Article査読

5 被引用数 (Scopus)

抄録

The structural correspondence among the bcc, ordered-bcc B2, triclinic Al2Fe and approximant Al5Fe2 structures have been examined on the basis of the experimentally obtained orientation relationship of (110)bcc,B2 //(22̄1)Al2Fe and [1̄11]bcc,B2 //N(241)Al2Fe, where N(hkl) denotes the normal direction of the (hkl) plane. The formation of the triclinic Al2Fe structure from the bcc structure is directly associated with that of Al-Fe covalent bonds; that is, hybridization between Al and Fe atoms. The covalent bond formation results in the appearance of decagonal-like atomic arrangements in the Al2Fe structure, which are similar to those in the approximant Al5Fe2 structure.

本文言語English
ページ(範囲)491-500
ページ数10
ジャーナルPhilosophical Magazine Letters
88
7
DOI
出版ステータスPublished - 2008 7

ASJC Scopus subject areas

  • 凝縮系物理学

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