Spin Transport Modulation of 2D Fe₃O₄ Nanosheets Driven by Verwey Phase Transition.

ABSTRACT: Realizing spin transport between heavy metal and two-dimensional (2D) magnetic materials at high Curie temperature (T_C) is crucial to advanced spintronic information storage technology. Here, environmentally stable 2D nonlayered Fe₃O₄ nanosheets are successfully synthesized using a reproducible process and found that they exhibit vortex magnetic domains at room temperature. A Verwey phase transition temperature (T_V) of ≈110 K is identified for ≈3 nm thick nanosheet through Raman characterization and spin Hall device measurement of the Pt/Fe₃O₄ bilayer. The anisotropic magnetoresistance ratio decreases near T_V, while both the spin Hall magnetoresistance ratio and spin mixing conductance (G_r) increase at

SUBMITTER: Jia Z 

PROVIDER: S-EPMC11538658 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature