The Debye temperature of sigma-phase Fe-Mo compounds as determined with M\"ossbauer spectroscopy
J. Cieslak, S. M. Dubiel
TL;DR
This study measures the Debye temperature of sigma-phase Fe-Mo compounds using Mössbauer spectroscopy, revealing a weak compositional dependence and comparing results with similar Fe-Cr and Fe-V systems.
Contribution
It provides the first detailed determination of Debye temperature variation in sigma-phase Fe-Mo compounds via Mössbauer spectroscopy.
Findings
Debye temperature increases weakly with Mo content
Rate of increase is approximately 3.1 K per atomic percent
Results are compared with Fe-Cr and Fe-V sigma-phase compounds
Abstract
The Debye temperature, T_D, of sigma-phase Fe_(100-x)Mo_x compounds with 47 < x < 56.7 was determined from the temperature dependence of the centre shift of M\"ossbauer spectra recorded in the temperature range of 80 - 300 K. Its compositional dependence shows a weak increase with x whose rate, in a linear approximation, is equal to 3.1 K/at%. The results are compared with the corresponding ones found previously for the sigma-phase in Fe-Cr and Fe-V compounds.
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