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Abstract An equimolar spinel (Al1/6Co1/6Cr1/6Fe1/6Mn1/6Ni1/6)3O4 high-entropy oxide (HEO) was developed as a novel oxide magnetic material. The as-synthesized nanocrystalline powder of high purity and homogeneity was obtained by a facile… Click to show full abstract
Abstract An equimolar spinel (Al1/6Co1/6Cr1/6Fe1/6Mn1/6Ni1/6)3O4 high-entropy oxide (HEO) was developed as a novel oxide magnetic material. The as-synthesized nanocrystalline powder of high purity and homogeneity was obtained by a facile solution combustion synthesis method with an average crystalline size of about 12 nm. To prove utility, the magnetic property was measured and the as-synthesized nanocrystalline powder showed ferrimagnetism below the Curie temperature 248 K. The long-range ferrimagnetic behavior can be understood by the quite larger super-exchange interactions due to the extreme chemical disorder in the HEO.
Journal Title: Journal of Magnetism and Magnetic Materials
Year Published: 2020
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