Multi‐Level Switching of Spin‐Torque Ferromagnetic Resonance in 2D Magnetite

• DOI: 10.1002/advs.202401944
• Publication Date: 2024-05-05T11:03:05Z
• Authors: Zhiyan Jia; Qian Chen; Wenjie Wang; Rong Sun; Zichao Li; René Hübner; Shengqiang Zhou; Miming Cai; Weiming Lv; Zhipeng Yu; Fang Zhang; Mengfan Zhao; Sen Tian; Lixuan Liu; Zhongming Zeng; Yong Jiang; Zhongchang Wang
• Keywords: Neuromorphic engineering

Abstract 2D magnetic materials hold substantial promise in information storage and neuromorphic device applications. However, achieving a material with high Curie temperature ( T C ), environmental stability, multi‐level states remains challenge. This is particularly relevant for spintronic devices, which require resistance to enhance memory density fulfil low power consumption multi‐functionality. Here, the synthesis of non‐layered triangular hexagonal magnetite (Fe 3 O 4 ) nanosheets are proposed demonstrate that ultrathin show broad antiphase boundaries (bAPBs) sharp (sAPBs), induce multiple spin precession modes resistance. Conversely, display slip bands sAPBs associated pinning effects, resulting magnetic‐field‐driven texture reversal reminiscent “0” “1” switching signals. In support micromagnetic simulation, direct explanation offer variation under microwave field, ascribed multi‐spin magnetization structure randomly distributed APBs within material. These novel unique textures dynamics provide an exciting platform constructing real devices catering emerging computing requirements.