Spin Torque Oscillator Having Multiple Fixed Ferromagnetic Layers or Multiple Free Ferromagnetic Layers

摘要

A spin torque oscillator and a method of making same. The spin torque oscillator is configured to generate microwave electrical oscillations without the use of a magnetic field external thereto, the spin torque oscillator having one of a plurality of input nanopillars and a nanopillar having a plurality of free FM layers.