| 主权项 |
1. A microwave assisted magnetic recording (MAMR) write head, comprising:
a write pole tip; a trailing shield; a spin torque oscillator between the write pole tip and the trailing shield, the spin torque oscillator having a first spacer adjacent to the write pole tip, a polarization layer, a field generating layer, a damping layer exchanged coupled to the field generating layer, and a second spacer located between the damping layer and the trailing shield, wherein the damping layer is configured to tune a frequency of the spin torque oscillator to match a frequency requirement of a recording media; and a current source connected across the spin torque oscillator, the current source configured to inject a current into the spin torque oscillator;
wherein the polarization layer is configured to generate a spin-polarized current that excites magnetic oscillations in the field generating layer to generate a microwave field, andwherein the first spacer and the second spacer are configured to depolarize a current passing through the spin torque oscillator. |
