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.

中文翻译：

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新型高熵尖晶石氧化物中的长程磁序和磁（二）电效应

摘要 本文介绍了一类新的高熵尖晶石材料，其成分为(Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)Cr2O4。详细的结构和微观结构表征突出表明，样品以立方尖晶石结构结晶，在纳米尺度上具有出色的化学均匀性。在反铁磁有序温度 (35 K) 处观察到介电测量的峰值，表明在该温度下磁电耦合的可能性。我们的研究首次强调了在复杂尖晶石结构中将多个元素容纳到单个亚晶格上的可行性，并为设计和定制高熵稳定相关电子系统中的功能特性开辟了新的可能性。