Rare‐Earth Permanent Magnet SmCo ₅ for Chiral Interfacial Spin‐Orbitronics

Interfacially asymmetric magnetic multilayers made of heavy metal/ferromagnet have attracted considerable attention in the spintronics community for accommodating spin-orbit torques (SOTs) and meanwhile hosting chiral spin textures. In these multilayers, accompanied interfacial Dzyaloshinskii–Moriya interaction (iDMI) permits formation Néel-type While significant progresses been Co, CoFeB, Co2FeAl, CoFeGd based it would be intriguing to identify new that could enable spin-torque controllability host nanoscale skyrmions. this report, first, thin films permanent magnet SmCo5 with perpendicular anisotropy are synthesized, which deterministic SOT switching, enabled by Hall effect, Pt/SmCo5/Ta trilayer is demonstrated. Further, stabilization room-temperature skyrmions diameters ≈100 nm [Pt/SmCo5/Ta]15, together a skyrmionium-like texture [Pt/SmCo5/Ir]15 shown. Based on material specific parameters, micromagnetic simulations also carried out. The results confirm presence textures family. Through engineering, thus demonstrate rare earth magnets platform studying spintronics.