Alloying Controlled Tuning of Interfacial Spin Orbit Interaction and Magnetic Damping in Crystalline FeCo Alloys
This study demonstrates that alloying single-crystalline FeCo thin films grown on GaAs(001) enables continuous tuning of interfacial spin-orbit interaction and magnetic damping, achieving an ultra-low damping coefficient of approximately 0.0015 near a Co concentration of 20% while establishing a direct correlation between interfacial spin-orbit fields and magnetic relaxation.