Simplistic approach for Determining Center Shift of M\"ossbauer Spectrum: exemplified on two cases

TL;DR

This paper presents a straightforward method for determining the isomer shift in Mössbauer spectra, validated on two different samples, and shows it yields accurate results comparable to traditional methods across a temperature range.

Contribution

The paper introduces a simple, effective approach for calculating the center shift in Mössbauer spectra, validated on complex samples and comparable to standard methods.

Findings

The simple method produces center shift values consistent with traditional techniques.

Debye temperatures derived from both methods agree within error margins.

The approach is applicable across a wide temperature range for different materials.

Abstract

A very simple method for determining the center (isomer) shift, CS, of a M\"ossbauer spectrum is outlined. Its applicability is demonstrated on two examples viz. pyrite and a ternary sigma-phase Fe-Cr-Ni compound. Sets of the spectra recorded in the temperature interval of 78-295 K for the former, and 5-293 K for the latter were analyzed with the simple and a commonly used methods. CS(T)-values obtained with both ways of the fitting procedures were analyzed in terms of the Debye model. The determined therefrom values of the Debye temperatures agree within the error limit with each other proving thereby that this very simple method gives correct values of CS.