Spin-polarized current-induced magnetization reversal in perpendicularly magnetized L1_0-FePt layers

摘要

Current-induced magnetization reversal of perpendicularly magnetized layers was studied in current-perpendicular-to-plane giant magnetoresistance pillars with L1_0-FePt (001) layers. The FePt layers exhibited strong perpendicular magnetic anisotropy of the order of 10~7 erg/cm~3. A series of magnetoresistance curves after applying pulse currents with different current densities showed that current-induced magnetization reversal from an antiparallel to a parallel alignment occurred at the current density of the order of 10~8 A/cm~2 with the assistance of magnetic field.