Does an icosahedral short-range order prevail in glass-forming Zr-Cu melts?
Does an icosahedral short-range order prevail in glass-forming Zr-Cu melts?
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DOI：
10.1209/0295-5075/100/56002
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
D. Holland-Moritz;Fan Yang;Tobias Kordel;S. Klein;F. Kargl;J. Gegner;T. Hansen;J. Bednarčík;I. Kaban;O. Shuleshova;N. Mattern;A. Meyer
中科院分区：
文献类型：
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作者：
D. Holland-Moritz;Fan Yang;Tobias Kordel;S. Klein;F. Kargl;J. Gegner;T. Hansen;J. Bednarčík;I. Kaban;O. Shuleshova;N. Mattern;A. Meyer
本文报道了用无容器静电悬浮处理技术结合中子衍射和同步辐射衍射对Zr-Cu合金熔体玻璃形成过程的静态结构因素的研究。从两个总结构因子中确定了部分Bhatia-Thornton结构因子SNN和SNC。虽然在文献中普遍认为Zr-Cu良好的玻璃形成能力与熔体中盛行的二十面体短程有序有关，但我们的部分结构因子表明，液态Zr-Cu的特征不在于占主导地位的二十面体短程有序。
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.