OSCILLATOR BY USING SPIN TRANSFER TORQUE

摘要

An oscillator using spine transmission torque and a manufacturing method thereof are provided. The oscillator comprises: (i) a fixed magnetic layer having a fixed magnetization direction, (ii) a nonmagnetic layer located on the fixed magnetic layer, and (iii) a free magnetic layer, capable of being reversed, located on the nonmagnetic layer and having the magnetic direction in order to rotate on a boundary surface with the nonmagnetic layer. The fixed magnetic layer as a magnetic direction parallel to the boundary surface. The fixed magnetic layer comprises (i) a first fixed magnetic unit and (ii) a second fixed magnetic layer in contact with the nonmagnetic layer and located on the first fixed magnetic layer. The first fixed magnetic layer comprises (i) a first surface being in contact with the second fixed magnetic layer and (ii) a second surface exposed to the outside by enclosing the first surface.