Mössbauer Spectra of Solid Solutions Processed Using the Voigt Function

An algorithm is proposed for mathematical processing of Mössbauer spectra of solid solutions by the Tikhonov regularization method using the Voigt function as an elementary line. Spectra of solid solutions Fe100– x Ge x (x = 5–25 at.%) and Fe 75 Si 15 Al 10 were processed as examples to show that th...

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Bibliographic Details
Published in:Journal of applied spectroscopy 2019-07, Vol.86 (3), p.409-415
Main Authors: Konygin, G. N., Nemtsova, O. M., Porsev, V. E.
Format: Article
Language:English
Subjects:
Algorithms
Analytical Chemistry
Atomic/Molecular Structure and Spectra
Line spectra
Mathematical analysis
Mossbauer spectroscopy
Physics
Physics and Astronomy
Regularization
Regularization methods
Solid solutions
Spectrum analysis
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Summary:An algorithm is proposed for mathematical processing of Mössbauer spectra of solid solutions by the Tikhonov regularization method using the Voigt function as an elementary line. Spectra of solid solutions Fe100– x Ge x (x = 5–25 at.%) and Fe 75 Si 15 Al 10 were processed as examples to show that the algorithm can produce a physically reasonable solution, improve significantly the quality of the processed spectra, and expand the possibilities of Mössbauer spectroscopy. The Voigt function was shown to be a satisfactory approximation for describing the statistical ensemble of nonequivalent local Fe configurations in disordered solid solutions.
ISSN:0021-9037
1573-8647
DOI:10.1007/s10812-019-00834-0