Temperature dependence of the chemical short-range order in undercooled and stable Al-Fe-Co liquids

被引：77
|
作者：
Schenk, T [1 ]
Simonet, V
Holland-Moritz, D
Bellissent, R
Hansen, T
Convert, P
Herlach, DM
机构：
[1] DLR, Inst Raumsimulat, D-51170 Cologne, Germany
[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[3] Lab Louis Neel, F-38042 Grenoble 9, France
[4] DRFMC, SPSMSD, MDM, Ctr Etud Nucl Grenoble, F-38054 Grenoble, France
[5] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
来源：
EUROPHYSICS LETTERS | 2004年 / 65卷 / 01期
关键词：
D O I：
10.1209/epl/i2003-10062-x
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The temperature dependence of the chemical short-range order is investigated by neutron scattering in stable and undercooled metallic liquid alloys. The experiments were performed on Al-Fe-Co liquids forming polytetrahedral phases and are in favour of an icosahedral topological short-range order prevailing in the liquids. The icosahedral short-range order is accompanied by a strong chemical order such that the first coordination shell of a transition metal atom consists preferentially of Al atoms. A decrease of temperature leads to an enhancement of the chemical short-range order.
引用
收藏
页码：34 / 40
页数：7
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