Investigation of current-induced domain wall motion in Gd-Fe alloy wire with low domain wall propagation field

摘要

Manipulating magnetic domain wall (DW) using electric current has been paid much attention from the viewpoint of device application such as new types of magnetic memories and logic circuit. Recently, the current-induced domain wall motion (CIDWM) whose anvmg forces are spin orbit torque (SOT) originated from the spin Hall effect (SHE) and Dzyaloshinsky-Moriya interaction (DMI) have been reported. In the case of CIDWM by the SOT, its threshold current density determined by DW propagation field. In this study, we observed the CIDWM in Ta/Gd-Fe/TaOx and Ta/Gd-Fe/W/TaOx multilayered wires with low DW propagation field.