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Citation: Cong Hong-Ri, Bian Xiu-Fang, Li Hui, Wang Li. Mediumrange Order Structure in Liquid Al₈₀Fe₂₀Alloy[J]. Acta Physico-Chimica Sinica, ;2002, 18(01): 39-44. doi: 10.3866/PKU.WHXB20020109 shu

Mediumrange Order Structure in Liquid Al₈₀Fe₂₀Alloy

1.
Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education, Shandong University, Jinan　250061;State Key Laboratory of Microstructure of Solid, Nanjing University, Nanjing　210093

Received Date: 21 June 2001
Available Online: 15 January 2002

The microstructure of liquid Al80Fe20 alloy is studied by molecular dynamics simulation, combined with experiment of Xray diffraction. It is found that there exists an obvious prepeak in the small domain（Q=17.5 nm－1）of the structure factor, which is considered as indicative of the existence of mediumrange order(MRO) in the liquid. Furthermore, the results of MD simulation agree also well with those of experiment. The chemical shortrange order(CSRO) α and BhatisThornton(BT) partial structure factors show that there exists very strong CSRO in the liquid, which suggests that the CSRO result in the formation of MRO. The maximum and the minimum at Q=17.5 nm－1 in SFe－Fe(Q) and SAl－Fe(Q) of FaberZiman(FZ) partial structure factors also indicate the existence of superstructure in the liquid. We also calculate the coordination numbers of the system and give a structural model representing MRO clusters.
- Al₈₀Fe₂₀ liquid alloy;Mediumrange order;MD simulation;Structure factor;Prepeak
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Mediumrange Order Structure in Liquid Al80Fe20Alloy

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com

Mediumrange Order Structure in Liquid Al₈₀Fe₂₀Alloy