Stable Cd-Mg-Yb and Cd-Mg-Ca icosahedral quasicrystals with wide composition ranges

J. Q. Guo, E. Abe, A. P. Tsai

研究成果: Article査読

37 被引用数 (Scopus)

抄録

Stable icosahedral quasicrystals with wide composition ranges have been found in the systems Cd-Mg-Yb and Cd-Mg-Ca. The icosahedral quasicrystals form in the following composition ranges: 25-85 at.% Cd, 0-60 at.% Mg and 10-20 at.% Yb for the Cd-Mg-Yb system; 33-85 at.% Cd, 0-52 at.% Mg and 10-20 at.%Ca for the Cd-Mg-Ca system. An electron diffraction study confirmed that the icosahedral quasicrystals have a primitive lattice. Its quasilattice constant is proportional to a Goldschmidt atom diameter of the quasicrystals weighted by a factor of 1.75 in the range 0.5681-0.5799 nm for the Cd-Mg-Yb system and 0.5697-0.5778 nm for the Cd-Mg-Ca system. The closely similar atom sizes of Cd and Mg, the valence electron ratio e/a = 2.0 and the large atom sizes of Yb and Ca cause the wide composition ranges of the Cd-Mg-Yb and Cd-Mg-Ca quasicrystals. The metallurgical behaviour of the quasicrystals is discussed.

本文言語English
ページ(範囲)27-35
ページ数9
ジャーナルPhilosophical Magazine Letters
82
1
DOI
出版ステータスPublished - 2002 1月
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学

フィンガープリント

「Stable Cd-Mg-Yb and Cd-Mg-Ca icosahedral quasicrystals with wide composition ranges」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル