Antiferromagnetic Ordering in VFeNbTiMo High-Entropy Alloy at Low Temperatures

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Published: Nov 27, 2024
DOI: https://doi.org/10.12693/APhysPolA.146.250
Keywords:
high-entropy alloys, magnetism, Mössbauer spectroscopy

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P. 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
R. Konieczny
Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland
W. Nowak
Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland
V.H. Tran
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland

Abstract

Structural and physical properties of the VFeNbTiMo high-entropy alloy were studied by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, 57Fe transmission Mössbauer spectroscopy, and magnetic measurements. It was found that the alloy forms two chemically distinct phases. The first, Mo-rich phase, crystallizes in a body-centered cubic structure (space group Im3m) with a= 3.1626(1) Å. The second, Fe-rich phase, crystallizes in a hexagonal structure (space group P6_3/mmc) with a=4.9245(2) Å, c=8.0419(5) Å. Magnetic measurements and 57Fe transmission Mössbauer spectroscopy showed that the alloy is in a paramagnetic state at temperatures between 5 and 700 K. Below 5 K, the hexagonal Fe-rich phase undergoes an antiferromagnetic transition.

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How to Cite
[1]
P. Sobota, R. Idczak, R. Konieczny, W. Nowak, and V. Tran, “Antiferromagnetic Ordering in VFeNbTiMo High-Entropy Alloy at Low Temperatures”, Acta Phys. Pol. A, vol. 146, no. 3, p. 250, Nov. 2024, doi: 10.12693/APhysPolA.146.250.
Issue
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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