作者
HY Hsieh, T Egami, Y He, SJ Poon, GJ Shiflet
发表日期
1991/11/1
期刊
Journal of non-crystalline solids
卷号
135
期号
2-3
页码范围
248-254
出版商
North-Holland
简介
The atomic structure of liquid-quenched amorphous Al90FexCe10−x (x = 5, 7) was studied by diffraction method using X-rays from a synchrotron source. The diffraction data were Fourier-transformed to obtain the atomic pair-density function, and were compared with those obtained by the pulsed neutron scattering to determine the AlFe and AlCe coordination and the extent of compositional short range ordering. The accuracy of the pair-density function, limited by both statistical and systematic errors, is discussed. It was found that both Fe and Ce atoms show strong compositional short range ordering, amounting to 70–80% of the maximum ordering possible. While Ce atoms form a dilute dense random packing substructure, the substructure of Fe atoms and the surrounding Al was found to be substantially different from the random packing.
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HY Hsieh, T Egami, Y He, SJ Poon, GJ Shiflet - Journal of non-crystalline solids, 1991