Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys
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 th...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer US
2021
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| Online Access: | https://hdl.handle.net/1721.1/133120 |
| _version_ | 1826211498978967552 |
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| author | Perrin, Alice McCall, Scott McElfresh, Michael Laughlin, David E. McHenry, Michael E. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Perrin, Alice McCall, Scott McElfresh, Michael Laughlin, David E. McHenry, Michael E. |
| author_sort | Perrin, Alice |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T15:07:15Z |
| format | Article |
| id | mit-1721.1/133120 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:07:15Z |
| publishDate | 2021 |
| publisher | Springer US |
| record_format | dspace |
| spelling | mit-1721.1/1331202024-06-06T19:11:43Z Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys Perrin, Alice McCall, Scott McElfresh, Michael Laughlin, David E. McHenry, Michael E. Massachusetts Institute of Technology. Department of Materials Science and Engineering 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. 2021-10-25T19:21:17Z 2021-10-25T19:21:17Z 2021-08 2021-05 2021-10-23T03:22:07Z Article http://purl.org/eprint/type/JournalArticle 1863-7345 1547-7037 https://hdl.handle.net/1721.1/133120 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) en https://doi.org/10.1007/s11669-021-00920-x Journal of Phase Equilibria and Diffusion 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. ASM International application/pdf Springer US Springer US |
| spellingShingle | Perrin, Alice McCall, Scott McElfresh, Michael Laughlin, David E. McHenry, Michael E. Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys |
| title | Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys |
| title_full | Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys |
| title_fullStr | Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys |
| title_full_unstemmed | Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys |
| title_short | Understanding Magnetic Exchange Interactions by the Pressure Dependent Curie Temperature in FeCoNiCuMn High Entropy Alloys |
| title_sort | understanding magnetic exchange interactions by the pressure dependent curie temperature in feconicumn high entropy alloys |
| url | https://hdl.handle.net/1721.1/133120 |
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