Crystalline phases displaying pseudo-icosahedral symmetry in Ag42In42RE16 (RE = Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu)

Crystalline phases displaying pseudo-icosahedral symmetry in Ag42In42RE16 (RE = Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu)
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Ag42In42RE16 中呈现伪二十面体对称性的晶相(RE = Gd、Tb、Dy、Ho、Er、Tm、Yb 和 Lu)

DOI:
10.1016/j.jallcom.2003.09.111
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发表时间:
2004
影响因子:
6.2
通讯作者:
A.P Tsai
A.P Tsai
中科院分区:
材料科学2区
文献类型:
--
作者:
J.F Ruan;K.H Kuo;J.Q Guo;A.P Tsai

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Ag42In42RE16 合金中存在 bcc 相 (a=1.510–1.519nm),可能与 Cd6RE 同构,其中 RE=Gd、Tb、Dy、Ho、Er、Tm 和 Lu。然而,在Ag42In42Yb16中,C中心单斜相(a=2.60nm,b=1.48nm,c=2.63nm,β≈108°)与二十面体准晶(IQC)共存。所有这些晶相都显示出局部伪二十面体对称性。
A bcc phase (a=1.510–1.519nm), possibly isostructural with Cd6RE, exists in Ag42In42RE16alloys, where RE=Gd, Tb, Dy, Ho, Er, Tm, and Lu. In Ag42In42Yb16, however, a C-centered monoclinic phase (a=2.60nm, b=1.48nm, c=2.63nm, β≈108°) coexists with the icosahedral quasicrystal (IQC). All these crystalline phases show local pseudo-icosahedral symmetry.