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Solution combustion synthesis and magnetic property of rock-salt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O high-entropy oxide nanocrystalline powder
Abstract
Abstract A facile solution combustion synthesis method was successfully applied to synthesize single rock-salt structural (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O high-entropy oxide (HEO) nanocrystalline powder with chemical homogeneity. The XRD patterns with Rietveld refinement reveal the formation of single-phase rock-salt structure occurs only at the synthesis temperatures ≥ 1123 K, and the average nanocrystalline size is about 43 nm. Moreover, two series of experiments confirm the effect of configurational entropy on phase stabilization. Furthermore, the as-synthesized single-phase (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O nanocrystalline powder exhibits long-range antiferromagnetic behavior below Neel temperature (TN = 106 K), which can be well understood by the super-exchange interactions in the rock-salt HEO. The powder also shows lower TN due to the significant amount of nonmagnetic ions suppressing the antiferromagnetic order.
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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
Recent progress of high-entropy materials for energy storage and conversion
Amiri, A., & Shahbazian-Yassar, R. (2021) · Journal of Materials Chemistry A · doi:10.1039/d0ta09578h · Cited by 592
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
Metadata
- Authors
- Mao, A., Xiang, H.-Z., Zhang, Z.-G., Kuramoto, K., Yu, H., & Ran, S.
- Venue
- Journal of Magnetism and Magnetic Materials
- Publisher
- Elsevier BV
- Published
- 2019-08
- Volume
- 484
- Pages
- 245-252
- ISSN
- 0304-8853 (ISSN-L)
- OpenAlex
- W2936212712
- Cited by
- 182
- References
- 0
- FWCI
- 9.35
- Type
- journal article
- Language
- en
- Open access
- closed
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- Mao, A., Xiang, H.-Z., Zhang, Z.-G., Kuramoto, K., Yu, H., & Ran, S. (2019). Solution combustion synthesis and magnetic property of rock-salt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O high-entropy oxide nanocrystalline powder. Journal of Magnetism and Magnetic Materials. https://doi.org/10.1016/j.jmmm.2019.04.023
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