Remanent magnetization states of thin films

Remanent magnetization states (shown as color maps of the horizontal magnetiza­tion projection) of various thin films initially saturated in the vertical direction: left image – Py, middle – fcc Co and right – hcp Co.

Switching of a rectangular 'soft' magnetic element

Switching of a rectangular ‘soft’ magnetic element.

Magnetization dynamics for a square-shaped Py element

Simulated transient magnetization dynamics for a square-shaped Py element.

Spin-torque induced oscillations in the point contact geometry (small diameter)

Frequency dependence on the (reduced) current strength for the spin-torque induced magnetization oscillation in the point contact geometry.

Spin-torque induced oscillations in the point contact geometry (large diameter)

Gray-scale snapshots of the out-of-plane mag­netization component for one of the localized oscillation modes induced in a Py layer by the spin-polarized current injected via the point contact with the diameter 80 nm.

Various ST-induced oscillation modes for the point contact (small diameter)