Does an icosahedral short-range order prevail in glass-forming Zr-Cu melts?
1 Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR) 51170 Köln, Germany, EU
2 Institut Laue-Langevin (ILL) - 38042 Grenoble, France, EU
3 HASYLAB at DESY - Notkestr. 85, 22607 Hamburg, Germany, EU
4 IFW Dresden - 01171 Dresden, Germany, EU
Received: 18 September 2012
Accepted: 16 November 2012
We report on investigations of the static structure factors of glass-forming Zr-Cu alloy melts by combination of the containerless processing technique of electrostatic levitation with diffraction of neutron and synchrotron radiation. The partial Bhatia-Thornton structure factors SNN and SNC were determined from the two total structure factors. While it is widely assumed in literature that the good glass-forming ability of Zr-Cu is related to an icosahedral short-range order prevailing in the melt, our partial structure factors demonstrate that the liquid Zr-Cu is not characterized by a dominant icosahedral short-range order.
PACS: 61.25.Mv – Liquid metals and alloys / 61.05.fg – Neutron scattering (including small-angle scattering) / 61.05.cf – X-ray scattering (including small-angle scattering)
© EPLA, 2012