Local Structure around Pd Atoms in Pd42:5Ni7:5Cu30P20 Excellent Glass-Former Studied by Anomalous X-ray Scattering
Local Structure around Pd Atoms in Pd42:5Ni7:5Cu30P20 Excellent Glass-Former Studied by Anomalous X-ray Scattering
复制标题
DOI：
10.2320/matertrans.maw200715
复制
发表时间：
2007-09
影响因子：
1.2
通讯作者：
S. Hosokawa;J. Bérar;N. Boudet;T. Ichitsubo;E. Matsubara;N. Nishiyama
中科院分区：
文献类型：
--
作者：
S. Hosokawa;J. Bérar;N. Boudet;T. Ichitsubo;E. Matsubara;N. Nishiyama
为了研究 Pd42:5Ni7:5Cu30P20 优良金属玻璃形成体中 Pd 原子周围的局域结构，在欧洲同步辐射装置光束线 BM02 处以接近 Pd K 吸收边的能量进行了反常 X 射线散射 (AXS) 实验。微分结构因子 �PdSðQÞ 具有良好的统计质量，这表明约 20 nm �1 处的前肩峰源自 Pd-Pd 原子相关性，表明存在中程有序。差分对相关函数中的第一个峰值 � PdgðrÞ 显示 Pd 原子周围的原子间长度比平均值更长。通过与之前的 AXS 和电子结构实验进行比较，详细讨论了 Pd 原子周围的局域结构。 [doi:10.2320/matertrans.MAW200715]
In order to study local structure around the Pd atoms in Pd42:5Ni7:5Cu30P20 excellent metallic glass-former, an anomalous X-ray scattering (AXS) experiment was performed at energies close to the Pd K absorption edge at the beamline BM02 of the European Synchrotron Radiation Facility. The differential structure factor, � PdSðQÞ, was obtained with a good statistical quality, which demonstrates that a pre-shoulder at about 20 nm � 1 , indicating the existence of an intermediate-range order, originates from the Pd-Pd atomic correlation. The first peak in the differential pair correlation function, � PdgðrÞ, shows a longer inter-atomic length around the Pd atoms than the average value. The local structure around the Pd atoms is discussed in detail by comparing to the previous experiments of AXS and electronic structure. [doi:10.2320/matertrans.MAW200715]