[15p-PB1-1~57] 10 Spintronics and Magnetics (Poster)

[15p-PB1-49] Investigation of Evaluation Methods for Current-Induced Magnetic Domain Wall Motion in the High Frequency Range

〇(B)Takahiro Funae¹, Hiroyuki Awano¹, Kenji Tanabe¹ (1.Toyota Tech.Inst.)

Keywords:

Racetrack memory,Spintronics,Current-induced magnetic domain wall motion

In recent years, domain-wall-driven magnetic memory capable of low-power and high-speed operation has attracted significant attention. Although evaluating high-frequency characteristics from the viewpoint of power is effective, previous studies have mainly focused on current density. In this study, Pt/GdFe nanowires with a fixed width and modulated length were fabricated, and the domain wall velocity was evaluated. Under a constant current density, similar velocities were observed regardless of wire length, whereas under constant power, the velocity decreased with increasing wire length due to a reduction in current density. These results suggest that domain wall velocity depends more strongly on current density than on power.