Local structure of liquid and undercooled liquid Cu probed by x-ray absorption spectroscopy
Local structure of liquid and undercooled liquid Cu probed by x-ray absorption spectroscopy
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DOI：
10.1088/1742-6596/121/4/042009
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发表时间：
2008-07
期刊：
影响因子：
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通讯作者：
F. Coppari;A. Cicco;A. Filipponi;A. Trapananti;G. Aquilanti;S. Panfilis
中科院分区：
文献类型：
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作者：
F. Coppari;A. Cicco;A. Filipponi;A. Trapananti;G. Aquilanti;S. Panfilis
在这项工作中，我们报告了最近的XAS（X射线吸收光谱）实验，旨在研究局部结构的液体和过冷铜，一个典型的紧密堆积的液体金属，在高压条件下。在我们的研究中，我们已经获得了新的实验数据的液体铜在高压和高温条件下使用同步辐射在ESRF和大容量的巴黎-爱丁堡细胞。我们已经研究了过冷区域的扩展以及作为压力的函数的局部结构的可能的修改，使用XAS数据分析。液态铜在高达3.3 GPa的高压下过冷至熔点以下300°C。
In this work we report about a recent XAS (x-ray absorption spectroscopy) experiment aimed to study the local structure of liquid and undercooled copper, a typical close-packed liquid metal, under high-pressure conditions. In our study we have obtained new experimental data of liquid Cu under high pressure and high-temperature conditions using synchrotron radiation at the ESRF and a large-volume Paris-Edinburgh cell. We have studied the extension of the undercooling region as well as possible modifications of the local structure as a function of pressure, using XAS data-analysis. Liquid copper has been undercooled up to 300°C below the melting point at high pressures up to 3.3 GPa.