Thermal expansion of a glassy alloy studied using a real-space pair distribution function
Thermal expansion of a glassy alloy studied using a real-space pair distribution function
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DOI：
10.1063/1.2187955
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发表时间：
2006-03
影响因子：
4
通讯作者：
D. V. Louzguine-Luzgin;A. Inoue;A. Yavari;G. Vaughan
中科院分区：
文献类型：
--
作者：
D. V. Louzguine-Luzgin;A. Inoue;A. Yavari;G. Vaughan
用实空间对分布函数验证了用倒易空间函数研究的Cu 55 Hf 25 Ti 15 Pd 5非晶合金的热膨胀。通过同步辐射光束加热过程中的实时衍射及其傅里叶变换处理得到的径向分布函数的实验结果表明，在热膨胀数据的计算中，互易分布函数和实空间分布函数都给出了很好的一致性。除了提供结构信息外，这些发现还表明，从主要宽衍射最大值的位置变化评估的平均原子最近邻距离的变化可以为金属玻璃提供良好的热膨胀数据。
Thermal expansion of a glassy Cu55Hf25Ti15Pd5 alloy studied by using reciprocal space functions is verified using a real-space pair distribution function. The experimental results obtained by real-time diffraction during heating in a synchrotron beam and their Fourier transformation processing to derive radial distribution functions indicate that both reciprocal and real-space distribution functions give good agreement in the calculation of thermal expansion data. In addition to providing structural information, these findings indicate that the change in the average atomic nearest-neighbor distance evaluated from the variation of the position of the main broad diffraction maximum can provide good thermal expansion data for metallic glasses.