Compensated ferrimagnets (FIMs) made of rare-earth transition-metal compounds have stimulated increasing interest for enabling fast spin dynamics. Taking Fe-Tb compounds as an example, substantial efforts have been made on the study of compensated magnetism and its potential spintronic applications. Current-induced spin-orbit torque (SOT) switching and its evolution with compensated ferrimagnetism in these compounds, however, remain to be systematically explored, which motivates the present study. By combining magnetometry and anomalous Hall effect measurements, a compositional magnetization compensation point (x c= 0.25) is determined for Fe 1− x Tb x films of a fixed thickness of 6.5 nm. The antiferromagnetic coupling between Fe and Tb sublattices is directly revealed by conducting element-specific x-ray magnetic circular dichroism measurements. The evolution of SOT switching as a …
https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.19.034088