INVESTIGADORES
LIMANDRI Silvina Paola
artículos
Título:
Extracting chemical information from high-resolution Kβ X-ray emission spectroscopy
Autor/es:
LIMANDRI S.; ROBLEDO, J.; TIRAO G.
Revista:
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2018 vol. 144 p. 29 - 37
ISSN:
0584-8547
Resumen:
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 some spectral features. Spectral changes can also be quantified by means of statistical parameters calculated by considering the 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 thiskind of spectra.
