  We present a circuit design of a spintronic oscillator based on magnetic
tunnel junction. In this design, a dc current is passed through a magnetic
tunnel junction which is connected to a feed-back wire below it. Any
fluctuation in the magnetization direction of the free layer of MTJ, drives a
fluctuating current through the feed-back wire, which exerts a magnetic field
on the free layer. This in turn can amplify the magnetization fluctuations of
the free layer. If the dc current passing through the MTJ is more than a
critical value, continuous precessing states of the magnetization are possible.
