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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

See all articles by Sourav Marik

Sourav Marik

Normandie Université - Laboratory of Crystallography and Materials Science

Deepak Singh

Rutherford Appleton Laboratory - ISIS

Bruno Gonano

University of Oslo - Centre for Materials Science and Nanotechnology

Fabien Veillon

Normandie Université - Laboratory of Crystallography and Materials Science

Denis Pelloquin

Normandie Université - Laboratory of Crystallography and Materials Science

Yohann Bréard

Normandie Université - Laboratory of Crystallography and Materials Science

Abstract

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

Suggested Citation

Marik, Sourav and Singh, Deepak and Gonano, Bruno and Veillon, Fabien and Pelloquin, Denis and Bréard, Yohann, Long Range Magnetic Ordering and Magneto-(Di) Electric Effect in a New Class of High Entropy Spinel Oxide. Available at SSRN: https://ssrn.com/abstract=3507452

Sourav Marik (Contact Author)

Normandie Université - Laboratory of Crystallography and Materials Science ( email )

Le Havre
France

Deepak Singh

Rutherford Appleton Laboratory - ISIS

United Kingdom

Bruno Gonano

University of Oslo - Centre for Materials Science and Nanotechnology

Norway

Fabien Veillon

Normandie Université - Laboratory of Crystallography and Materials Science

Le Havre
France

Denis Pelloquin

Normandie Université - Laboratory of Crystallography and Materials Science

Le Havre
France

Yohann Bréard

Normandie Université - Laboratory of Crystallography and Materials Science

Le Havre
France

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