Purely Electric-Driven Field-Free Magnetization Switching in L10-FePt Single Film for Reconfigurable Spin Logic Computing

Magnetization switching driven by spin-orbit torques (SOTs) in perpendicular single magnets contributes to the development of high-efficiency next-generation spintronic memory and logic. However, the in-plane magnetic fields required for deterministic magnetization switching in single magnets hamper the design of all-electric-control devices. Herein, a simple, efficient, and reliable all-electric-control magnetization switching in a sputtered single L1(0)-FePt film with an artificial lateral gradient is reported. The deterministic magnetization switching exhibits a strong angle dependence and can be effectively tuned through lateral asymmetry. A maximum self-switching ratio of 18% is achieved without magnetic fields. The structural characterization results reveal that this deterministic magnetization self-switching can be primarily attributed to the ordering degree gradient. Furthermore, a programmable Boolean logic device together with a full adder is constructed using the single L1(0)-FePt magnet. The findings of the study highlight an effective route to accomplish electrical spin manipulation in single magnets. This enables the design of purely electrically controlled SOTs-based logic and in-memory computing.