CHEMICALLY DRIVEN PHASON DISORDER IN ICOSAHEDRAL AL-PD-MN ALLOYS

被引：20

作者：

TSAI, AP ^{[1
]}

CHEN, HS ^{[1
]}

INOUE, A ^{[1
]}

MASUMOTO, T ^{[1
]}

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.43.8782

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A very strong composition dependence of linewidths and chemical order is seen in rapidly quenched i-Al(90-x)Pd(x)Mn10 and i-Al70Pd(x)Mn30-x alloys. The i-Al70Pd20Mn10 exhibits a very small residual peak width, with a half width a half maximum of 2.5 x 10(-3) angstrom-1. The replacement of Pd with Al drastically increases the peak widths, in particular the dependence on the phason momentum, G perpendicular-to, by 2 orders of magnitude, while little line broadening is seen when Mn replaces Pd. Concurrent with the line broadening, the chemically ordered face-centered icosahedral structure in Al70Pd20Mn10 transforms to the simple structure of Al80Pd10Mn10.

引用

页码：8782 / 8785

页数：4

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