Crystal Structure Refinement of Mg5Nb4O15and Mg5Ta4O15by Rietveld Analysis of Neutron Powder Diffraction Data

1998 ◽  
Vol 137 (2) ◽  
pp. 359-364 ◽  
Author(s):  
S. Pagola ◽  
R.E. Carbonio ◽  
M.T. Fernández-Dı́az ◽  
J.A. Alonso
2007 ◽  
Vol 22 (3) ◽  
pp. 253-255 ◽  
Author(s):  
Franz Weitzer ◽  
Hailin Chen ◽  
Julius C. Schuster

Crystal structure of the triclinic ternary phase Cr4(Al, Si)11 was investigated by full-profile Rietveld analysis of powder diffraction data. Four hundred eighty-four reflections were refined to a final RBragg value of 5.00%. Cr4(Al, Si)11 is isostructural to Mn4Al11. Silicon atoms enter into the structure by partially replacing aluminium on the Al(1) and Al(2) sites.


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