Room‐Temperature Magnetic Antiskyrmions in Canted Ferrimagnetic CoHo Alloy Films

• DOI: 10.1002/adma.202413700
• Publication Date: 2025-01-10T10:06:38Z
• Authors: Jingyan Zhang; Pengwei Dou; Jiawang Xu; Jialiang Jiang; Haifeng Du; Tao Zhu; Jia Luo; Guoping Zhao; Yuanbo Wang; Quangao Qiu; Liangyu Feng; Xiao Deng; Tianping Ma; Shiming Zhou; Baogen Shen; Shouguo Wang
• Keywords: Ferrimagnetism; Magnetism

Abstract Magnetic antiskyrmions, the anti‐quasiparticles of magnetic skyrmions, possess alternating Bloch‐ and Néel‐type spin spirals, rendering them promising for advanced spintronics‐based information storage. To date, antiskyrmions are demonstrated in a few bulk materials featuring anisotropic Dzyaloshinskii–Moriya interactions limited number artificial multilayers. Identifying novel film capable hosting isolated is critical memory applications topological spintronics. Herein, formation room‐temperature single ferrimagnetic CoHo rare‐metal alloy films varying thicknesses, observed using Lorentz transmission electron microscopy reported. Furthermore, rotating fields ( H ) proposed to facilitate antiskyrmion nucleation enhance their areal density by an order magnitude compared that same area under individual vertical . In addition, experimental phenomenological analysis confirm can be attributed reorientation involving spontaneous canted magnetism, as evidenced polarized neutron reflectometry. Micromagnetic simulations further show significantly depends on field. These findings expand family known antiskyrmion‐hosting provide insights into mechanisms, thus serving basis application