Long Range Magnetic Ordering and Magneto-(Di) Electric Effect in a New Class of High Entropy Spinel Oxide
9 Pages Posted: 20 Dec 2019 First Look: Under Review
Herein, a new class of high entropy spinel material with composition (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)Cr2O4 is introduced. Detailed structural and microstructural characterizations highlight that the sample crystallizes in a cubic spinel structure with an excellent chemical homogeneity at the nanoscale. A peak in the dielectric measurement is observed at the antiferromagnetic ordering temperature (35 K), indicating the possibility of magneto-electric coupling at that temperature. Our study, for the first time, highlights the feasibility to accommodate multiple elements onto a single sublattice in a complex spinel structure and opens new possibilities to design and tailor functional properties in high entropy stabilized correlated electron systems.
Keywords: High Entropy Oxides, Spinel, Magneto-(di)electric effect
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