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

页码：34 / 40

页数：7

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