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Long-Range Antiferromagnetic Order in a Rocksalt High Entropy Oxide
Open accessAbstract
We report for the first time the magnetic structure of the high entropy oxide (Mg 0.2 Co 0.2 Ni 0.2 Cu 0.2 Zn 0.2 )O using neutron powder diffraction. This material exhibits a sluggish magnetic transition but possesses a long-range ordered antiferromagnetic ground state, as revealed by direct current and alternating current magnetic susceptibility, neutron diffraction, and spectroscopy. The magnetic propagation wavevector is k = (1/2, 1/2, 1/2) based on the cubic structure Fm 3̅ m, and the magnetic structure consists of ferromagnetic sheets in the (111) planes with spins antiparallel between two neighboring planes. Neutron spectroscopy reveals strong magnetic excitations at 100 K that survive up to room temperature. This work demonstrates that entropy-stabilized oxides represent a unique platform to study long-range magnetic order with an extreme chemical disorder.
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Citations
Cited by
Oses, C., Toher, C., & Curtarolo, S. (2020) · Nature Reviews Materials · doi:10.1038/s41578-019-0170-8 · Cited by 2,081
Understanding the Role of Entropy in High Entropy Oxides
Aamlid, S. S., Oudah, M., Rottler, J., & Hallas, A. M. (2023) · Journal of the American Chemical Society · doi:10.1021/jacs.2c11608 · Cited by 574
High-entropy materials for energy and electronic applications
Schweidler, S., Botros, M., Strauss, F., Wang, Q., Ma, Y., Velasco, L., Cadilha Marques, G., Sarkar, A., Kübel, C., Hahn, H., et al. (2024) · Nature Reviews Materials · doi:10.1038/s41578-024-00654-5 · Cited by 448
High entropy oxides: The role of entropy, enthalpy and synergy
Sarkar, A., Breitung, B., & Hahn, H. (2020) · Scripta Materialia · doi:10.1016/j.scriptamat.2020.05.019 · Cited by 389
Musicó, B. L., Gilbert, D., Ward, T. Z., Page, K., George, E., Yan, J., Mandrus, D., & Keppens, V. (2020) · APL Materials · doi:10.1063/5.0003149 · Cited by 299
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Metadata
- Authors
- Zhang, J., Yan, J., Calder, S., Zheng, Q., McGuire, M. A., Abernathy, D. L., Ren, Y., Lapidus, S. H., Page, K., Zheng, H., Freeland, J. W., Budai, J. D., & Hermann, R. P.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-04-26
- Volume
- 31
- Issue
- 10
- Pages
- 3705-3711
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2913273989
- Cited by
- 196
- References
- 0
- FWCI
- 11.58
- Type
- journal article
- Language
- en
- Open access
- green
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- Zhang, J., Yan, J., Calder, S., Zheng, Q., McGuire, M. A., Abernathy, D. L., Ren, Y., Lapidus, S. H., Page, K., Zheng, H., Freeland, J. W., Budai, J. D., & Hermann, R. P. (2019). Long-Range Antiferromagnetic Order in a Rocksalt High Entropy Oxide. Chemistry of Materials. https://doi.org/10.1021/acs.chemmater.9b00624
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