Absence of Long-Range Magnetic Ordering in a Trirutile High-Entropy Oxide (Mn_0.2Fe_0.2Co_0.2Ni_0.2Cu_0.2)Ta_1.92O_6-δ.

ABSTRACT: Functionalities of solid-state materials are usually considered to be dependent on their crystal structures. The limited structural types observed in the emerging high-entropy oxides put constraints on the exploration of their physical properties and potential applications. Herein, we synthesized the first high-entropy oxide in a trirutile structure, (Mn_0.2Fe_0.2Co_0.2Ni_0.2Cu_0.2)Ta_1.92O_6-δ, and investigated its magnetism. The phase purity and high-entropy nature were confirmed by powder X-ray diffraction and energy-dispersive spectroscopy, respectively. X-ray photoelectron spectroscopy indicated divalent Mn, Co, Ni, and Cu along with trivalent Fe. Magnetic property measurements showed antiferromagnetic coupling and

SUBMITTER: Angelo G 

PROVIDER: S-EPMC11863364 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature