Magnetization Dynamics in Perpendicular Synthetic Antiferromagnets

Synthetic antiferromagnets (SAFs) are promising candidates for spintronic devices, due to their advantages such as fast switching, small switching current, and excellent resilience to external field perturbations. Specifically, SAFs with perpendicular magnetic anisotropy (p-SAFs) are of technological importance considering their high scalability. Despite the great potential of p-SAFs as the building blocks for spintronic devices, a comprehensive understanding of their rich dynamics remains elusive. In our recent work, we reveal the magnetization dynamics of p-SAFs by combining theoretical modeling and experimental investigation based on the time-resolved magneto-optical Kerr effect metrology. The results successfully identify the precession characteristics and damping mechanisms of individual layers, and also the interlayer coupling and mutual spin pumping, which can guide the design of p-SAF-based architectures for spintronic applications.