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.

主权项

1. A spin torque oscillator configured to generate microwave electrical oscillations without the use of a magnetic field external thereto, the spin torque oscillator having a nanopillar that includes a plurality of free ferromagnetic (FM) layers, wherein the nanopillar includes no fixed magnetic layers.