High efficiency spin - torque spin - torque oscillator (sto) with dual spin polarization layer (spin - torque oscillator (sto), with a high efficiency with double spin polarization layer spin - torque)

摘要

In one embodiment includes a mamr-head: a main magnetic pole, a sto, which is positioned close to the main magnetic pole, wherein the sto contains the following: a first vertical magnetic layer, which is positioned above the main magnetic pole, wherein the first vertical magnetic layer a first spin polarization layer with an axis of the magnetic anisotropy in a direction perpendicular to a film surface, a first non-magnetic transfer layer, with the above the first vertical magnetic layer is positioned, a magnetic layer effectively with a plane of the easy magnetization in the film surface, which, by means of the first non-magnetic transfer layer is positioned, wherein the magnetic layer is a fgl, a second non-magnetic transfer layer, which is positioned above the magnetic layer, and a second perpendicular magnetic layer, which by means of the second non-magnetic transfer layer is positioned, wherein the second perpendicular magnetic layer a second spin polarization layer with a magnetic anisotropy in the direction perpendicular to the film plane is.