Enthalpy of Solution of Rhodium in Iron Studied by 57Fe Mössbauer Spectroscopy

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Published: Nov 27, 2024
DOI: https://doi.org/10.12693/APhysPolA.146.239
Keywords:
M\"{o}ssbauer spectroscopy, hyperfine parameters, binding energy, enthalpy of solution in binary iron alloys

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R. Konieczny
Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland
M. Sobota
Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland
R. Idczak
Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland

Abstract

The room temperature Mössbauer spectra of 57Fe were measured for Fe1-xRhx solid solutions with x in the range 0.01 ≤ x ≤ 0.06. The obtained data were analysed in terms of the binding energy Eb between two rhodium atoms in the studied materials using the extended Hrynkiewicz–Królas model. The extrapolated value of Eb for x=0 was used to compute the enthalpy HFe-Rh of solution of Rh in the α-iron matrix. It was found that the enthalpy HFe-Rh value is negative and rhodium atoms interact repulsively. The result was compared with the value derived from Miedema's cellular atomic model of alloys.

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How to Cite
[1]
R. Konieczny, M. Sobota, and R. Idczak, “Enthalpy of Solution of Rhodium in Iron Studied by 57Fe Mössbauer Spectroscopy”, Acta Phys. Pol. A, vol. 146, no. 3, p. 239, Nov. 2024, doi: 10.12693/APhysPolA.146.239.
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Vol. 146 No. 3 (2024): Selected papers presented at the XIII All-Polish Seminar on Mössbauer Spectroscopy (OSSM 24), pp. 209-316
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