Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys
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11669_2021_920_ReferencePDF.pdf
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Author(s)
Perrin, Alice
McCall, Scott
McElfresh, Michael
Laughlin, David E.
McHenry, Michael E.
Date Issued
August 2021
Journal
Journal of Phase Equilibria and Diffusion
Publisher
Springer US
Citation
Perrin, A., McCall, S., McElfresh, M. et al. Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys. J. Phase Equilib. Diffus. 42, 617–622 (2021)
Version
Author's final manuscript
Abstract
Abstract
We report the pressure (P) dependent Curie temperature, Tc (P) in a FeCoNiCuMn high entropy alloy (HEA). We analyze Tc (P) in terms of d-orbital contraction to explain changes in magnetic exchange interactions (Jex). Considerations of the d-radius contraction inferred from the composition dependence of Tc in γ-Fe-Ni are combined with experimental data for P-dependent lattice constants and magnetic measurements of Tc (P), to calculate contributions of atomic spacing and d-orbital radii to Jex. We show the d-orbital contraction with P captures most of the Tc variation in this alloy.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/s11669-021-00920-x
