Issue |
Europhys. Lett.
Volume 65, Number 1, January 2004
|
|
---|---|---|
Page(s) | 34 - 40 | |
Section | Condensed matter: structure, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2003-10062-x | |
Published online | 01 December 2003 |
Temperature dependence of the chemical short-range
order in undercooled and stable
-
-
liquids
1
Institut für Raumsimulation, DLR - D-51170 Köln, Germany
2
European Synchrotron Radiation Facility - B.P. 220, F-38043 Grenoble Cedex, France
3
Laboratoire Louis Néel - B.P. 166, F-38042 Grenoble Cedex 9, France
4
Centre d'Etudes Nucléaires de Grenoble, DRFMC/SPSMSD/MDM F-38054 Grenoble Cedex, France
5
Institut Laue-Langevin - B.P. 156, F-38042 Grenoble Cedex 9, France
Received:
14
July
2003
Accepted:
3
November
2003
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
-
-
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
atoms. A decrease of
temperature leads to an enhancement of the chemical short-range
order.
PACS: 61.20.-p – Structure of liquids / 61.12.-q – Neutron diffraction and scattering / 61.25.Mv – Liquid metals and alloys
© EDP Sciences, 2004
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