Current-induced magnetization switching is demonstrated in a micron sized Hall bar consisting of Pt-capped ultrathin ferrimagnetic MnGa films. The films showed a low magnetization Ms 150 kA/m and a large perpendicular magnetic anisotropy (PMA) field 0HKeff 2:5 T, indicating a PMA thickness t product Kuefft 0:47 mJ/m2, which is relatively larger than those reported for other material films with PMA. Magnetization switching induced by an in-plane electrical current was examined with the application of an in-plane magnetic field. The phase diagram of the switching current vs the in-plane magnetic field is qualitatively consistent with that of the torque due to the spin-Hall effect in the Pt layer.
ASJC Scopus subject areas
- Physics and Astronomy(all)