Mössbauer Spectra of Solid Solutions Processed Using the Voigt Function

• Published in: Journal of applied spectroscopy Vol. 86; no. 3; pp. 409 - 415
• Main Authors: Konygin, G. N., Nemtsova, O. M., Porsev, V. E.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-07-2019; Springer; Springer Nature B.V
• 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; local atomic configurations; solid solution; Voigt function; Mössbauer spectroscopy
• ISSN: 0021-9037; 1573-8647
• DOI: 10.1007/s10812-019-00834-0

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.