Edge-Mediated Magnetic Domain Rearrangement in van der Waals Magnet Fe 3 GaTe 2

作者：Shuaizhao Jin, Yujia Liu, Baijun Gu, Xiangping Zhang, Yiting Wang, Yichong Chen, Tian‐Long Xia, Boyuan Huang, Jiawang Hong, Xueyun Wang · 发表于：Nano Letters · 年份：2025 · DOI：10.1021/acs.nanolett.5c01181 · 被引用次数：4 · 研究领域：Inorganic Chemistry and Materials、Iron-based superconductors research、Magnetic properties of thin films

The emergence of van der Waals (vdW) magnets has opened new frontiers for investigation of 2-dimensional magnetism and application of spintronic memories. However, as the system approached the nanoscale, the edge effect significantly enhanced, posing critical challenges in understanding edge-mediated modifications of magnetic behavior, such as the nanoscale magnetic domain. Here, we employ magnetic force microscopy to systematically investigate edge-mediated magnetic domain rearrangement in Fe 3 GaTe 2 flakes. By performing thermal treatment, we observed a distinct transition from labyrinthine to edge-localized stripe domains perpendicular to the flake edges. Furthermore, we reveal a competition and stabilization between size effect and edge effect by investigating thickness-dependent variation in the length of stripe domains and indicate that such an edge effect suppresses the formation of skyrmions. These findings not only elucidate the critical role of the edge effect in governing the domain morphology of vdW magnets but also provide insights for designing edge-mediated nanostructures in next-generation spintronic devices.