Full-Scale Field-Free Magnetization Switching in Y₃Fe₅O₁₂/Pt Nanostructures for Spin–Orbit Torque Applications

High Resolution Image Download MS PowerPoint Slide The ability to achieve perpendicular magnetization switching via spin–orbit torques (SOTs) is a critical advance for the development of the next generation of spintronic applications. However, the use of an external magnetic field to break the mirror symmetry is typically required to facilitate current-induced magnetization switching, which poses a significant challenge for practical implementation. Here, we demonstrate the field-free magnetization switching in the Y 3 Fe 5 O 12 (YIG)/Pt heterostructure. This is achieved by introducing a lateral structure asymmetry in our devices, which can lead to an out-of-plane effective field. Our results provide an alternative solution for achieving field-free magnetization switching in nanoscale ferrimagnet-based heterostructures, thereby advancing the development of emerging SOT-based devices.