  A study of dynamic and reversible voltage controlled magnetization switching
in ferromagnetic Co/Pt thin film with perpendicular magnetic anisotropy at room
temperature is presented. The change in the magnetic properties of the system
is observed in a relatively thick film of 15 nm. A surface charge is induced by
the formation of electrochemical double layer between the metallic thin film
and non-aqueous lithium LiClO4 electrolyte to manipulate the magnetism. The
change in the magnetic properties occurred by the application of an external
electric field. As the negative voltage was increased, the coercivity and the
switching magnetic field decreased thus activating magnetization switching. The
results are envisaged to lead to faster and ultra-low power magnetization
switching as compared to spin-transfer torque (STT) switching in spintronic
devices.
