Theoretical analysis investigates x-ray absorption characteristics in compounds, suggesting fixed dopant arrangement enhances data alignment.
We present a theoretical analysis of x-ray-absorption near-edge structure at the Sr K edge in La_2-xSr_xCuO_4 and SrF_2 compounds based on the experimental results of Tan et al. [Phys. Rev. Lett. 64, 2715 (1990)]. Contrary to the suggestion put forward in this investigation which is based on the observation of a certain absorption structure, we obtain the best agreement with experimental data when the environment of the dopant Sr atom is kept fixed in its crystallographic arrangement.
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M. et al. (1992) studied this question.
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