Extracting chemical information from high-resolution Kβ X-ray emission spectroscopy

LIMANDRI, S.; ROBLEDO, J.; TIRAO, G.

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY

PERGAMON-ELSEVIER SCIENCE LTD

Año: 2018 vol. 144 p. 29 - 37

0584-8547

High-resolution X-ray emission spectroscopy allows studying the chemical environment of awide variety of materials.Chemical information can be obtained by fitting the X-ray spectra and observing the behavior of somespectral features. Spectral changes can also be quantified by means of statistical parameters calculated by consideringthe spectrumas a probability distribution. Another possibility is to perform statisticalmultivariate analysis, such as principal component analysis. In this work the performance of these procedures for extracting chemical information in X-ray emission spectroscopy spectra for mixtures of Mn2+ and Mn4+ oxides are studied. A detail analysis of the parameters obtained, aswell as the associated uncertainties is shown. Themethodologies are also applied forMn oxidation state characterization of double perovskite oxides Ba1+xLa1−xMnSbO6 (with 0 ≤ x ≤ 0.7). The results show that statistical parameters and multivariate analysis are the most suitable for the analysis of this kind of spectra.