Use of a Double Convolution of Lorentz and Gaussian Functions for Processing Mössbauer Spectra of Supersaturated Disordered Solid Solutions

2022 ◽  
Author(s):  
G. N. Konygin ◽  
O. M. Nemtsova
Keyword(s):  
Solid Solutions ◽  
Mössbauer Spectra ◽  
Gaussian Functions ◽  
Mossbauer Spectra

USING A DOUBLE CONVOLUTION OF LORENTZ AND GAUSS FUNCTIONS FOR PROCESSING THE MÖSSBAUER SPECTRA OF THE SUPERSATURATED DISORDERED SOLID SOLUTIONS

2021 ◽  
Vol 88 (6) ◽  
pp. 907-913
Author(s):  
G. N. Konygin ◽  
O. M. Nemtsova
Keyword(s):  
Magnetic Field ◽  
Solid Solutions ◽  
Mössbauer Spectra ◽  
Hyperfine Magnetic Field ◽  
Tikhonov Regularization Method ◽  
Gaussian Functions ◽  
Mossbauer Spectra ◽  
Supersaturated Solid Solutions ◽  
Velocity Scale ◽  
Mathematical Processing

An algorithm for mathematical processing of the Mössbauer spectra of supersaturated disordered solid solutions by the Tikhonov regularization method using a double convolution of the Lorentz function and two Gaussians is proposed. By the examples of spectra of supersaturated disordered solid solutions Fe100–xGex (x = 10—25 at.%) and Fe75Si15Al10, it is shown that the algorithm allows more correct processing, which provides a reliable distribution function of the hyperfine magnetic field. It is shown that to take into account the statistical ensemble of nonequivalent local atomic configurations of Fe atoms in disordered supersaturated solid solutions, it is necessary to use not only the convolution of two Gaussian functions, but also the projection scaling factor of the hyperfine magnetic field onto the velocity scale.

Mössbauer Spectra of Solid Solutions Processed Using the Voigt Function

2019 ◽  
Vol 86 (3) ◽  
pp. 409-415
Author(s):  
G. N. Konygin ◽  
O. M. Nemtsova ◽  
V. E. Porsev
Keyword(s):  
Solid Solutions ◽  
Mössbauer Spectra ◽  
Mossbauer Spectra ◽  
Voigt Function

scholarly journals Interactions between osmium atoms dissolved in iron observed by the 57Fe Mössbauer spectroscopy

Nukleonika ◽  
2015 ◽  
Vol 60 (1) ◽  
pp. 75-79 ◽  
Author(s):  
Robert Konieczny ◽  
Rafał Idczak ◽  
Jan Chojcan
Keyword(s):  
Binding Energy ◽  
Solid Solutions ◽  
Qualitative Agreement ◽  
Room Temperature ◽  
Mössbauer Spectra ◽  
Enthalpy Of Solution ◽  
Atomic Model ◽  
Mossbauer Spectra ◽  
Model Predictions ◽  
Iron Based

Abstract The room temperature 57Fe Mössbauer spectra for binary iron-based solid solutions Fe1−xOsx, with x in the range 0.01 ≤ x ≤ 0.05, were analyzed in terms of binding energy Eb between two Os atoms in the Fe-Os system. The extrapolated values of Eb for x = 0 were used for computation of enthalpy of solution of osmium in iron. The result was compared with that resulting from the cellular atomic model of alloys by Miedema. The comparison shows that our findings are in qualitative agreement with the Miedema's model predictions.

Mössbauer spectra of Fe x Cr1 − x S solid solutions

2007 ◽  
Vol 49 (10) ◽  
pp. 1920-1922
Author(s):  
V. V. Sokolovich ◽  
O. A. Bayukov
Keyword(s):  
Solid Solutions ◽  
Mössbauer Spectra ◽  
Mossbauer Spectra
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