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. 2022 Aug 10;608(7922):310–316. doi: 10.1038/s41586-022-04935-3

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 4 — a, M(T) curves measured in the temperature range 10–1,000 K under a magnetic field of 40 kA m⁻¹. b, M(H) loops of the MCAs measured at 800 K, confirming that the second phase in the S-MCA is ferromagnetic, with a T_c higher than 800 K. The measuring temperature of 800 K was selected on the basis of the M(T) results as marked by a black dashed line in a. c, M(H) loops of the individual cast fcc and L1₂ phases in the M-MCA measured at 300 K. d, Temperature dependence of the M_s of the investigated MCAs.