X-ray determinations of the liquid-structure factor and pair-correlation function ofHe4

1987 ◽  
Vol 35 (1) ◽  
pp. 89-105 ◽  
Author(s):  
F. H. Wirth ◽  
R. B. Hallock
Keyword(s):  
Correlation Function ◽  
Structure Factor ◽  
Pair Correlation Function ◽  
Pair Correlation ◽  
Liquid Structure ◽  
X Ray

scholarly journals Structure of Ni-P Melts by X-Ray Diffraction

1997 ◽  
Vol 52 (3) ◽  
pp. 284-288
Author(s):  
B. Sedelmeyer ◽  
S. Steeb
Keyword(s):  
Correlation Function ◽  
Coordination Number ◽  
Structure Factor ◽  
Pair Correlation Function ◽  
Pair Correlation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Two Peaks ◽  
Second Peak

Abstract X-ray diffraction was done with molten Ni81 P19 (930°C) and with molten Ni68.8 P31.2 (1160°C). The second peak of the structure factor and the pair correlation function of the Ni81P19 -melt shows a shoulder, as was observed for amorphous Ni80P20 . The first two peaks in the pair correlation function can be modelled using crystalline Ni3 P besides molten Ni. In the case of Ni68.8P31.2 , the first peak in the pair correlation function was modelled using the distance and coordination number as in crystalline Ni2P.

Structure of Fe-Si-melts by X-ray Diffraction

1997 ◽  
Vol 52 (5) ◽  
pp. 415-419
Author(s):  
B. Sedelmeyer ◽  
S. Steeb
Keyword(s):  
Correlation Function ◽  
Pair Correlation Function ◽  
Pair Correlation ◽  
Molten Alloy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coordination Numbers ◽  
Crystalline Alloy ◽  
Connection Line

Abstract X-ray diffraction was done with molten Fe66,7 Si33,3 and molten Fe33,3 Si66,7 . The coordination numbers versus the concentration lie above the connection line between the coordination numbers of the unalloyed molten elements Fe and Si, respectively, which means a tendency for microsegregation. The pair correlation function of molten Fe66,7 Si33,3 was modeled using the data of crystalline Fe2 Si. At the same time, the pair correlation function of the molten alloy Fe33,3 Si66,7 can be modeled using the data of the corresponding crystalline alloy. Thus for molten Fe33,3 Si66,7 microsegregation into FeSi2 and Si or FeSi and for molten Fe66,7 Si33,3 microsegregation into Fe2 Si and Fe or FeSi exists.

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