Abstract
Use of a Monte Carlo method is proposed for assessing the reliability of the experimental determination of cation distribution in spinels as deduced from X-ray powder diffraction data. The method is demonstrated on the ternary spinels Cu 0.6Zn 0.4Al 2O 4 and Cu 0.2Mg 0.8Al 2O 4, which present the complication of having two cations with very close X-ray scattering power. It is shown that the proposed method tests out the precision of the cation distribution results with greater detail than what can be obtained by simple consideration of a residual function.
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