We report the realization of fully compensated synthetic antiferromagnets (SAFs) in Pt/Co/Ru/Fe 1− x Tb x multilayers with perpendicular magnetic anisotropy, pronounced anomalous Hall resistances and magneto-optical responses. In particular, the properties of SAFs are systematically investigated through optimizing the thicknesses of the Co layer, the Ru spacer, and the concentration (x) of the ferrimagnet (FIM) Fe 1− x Tb x layers. The incorporation of the FIM Fe 1− x Tb x films into SAFs accelerates the search for a magnetic multilayer with fully compensated magnetism and exhibiting pronounced anomalous Hall resistance and magneto-optical signals. These advantages enable spin-orbit-torque switching and magneto-optical Kerr effect imaging experiments on the fully compensated SAFs to be readily investigated. Through incorporating FIMs into SAFs, we believe that the present material system could provide …
https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.16.044056