Patent ID: 8837086

Claim:
A magnetic recording head used for microwave-assisted magnetic recording, the magnetic recording head comprising: a main pole; a spin torque oscillator disposed on the main pole, the spin torque oscillator including a high-speed rotating magnetization layer in which the magnetization is rapidly rotated by a spin torque; a trailing shield disposed on the spin torque oscillator; a sub pole magnetically coupled to the trailing shield disposed in a medium-facing surface, extending in a vertical direction to the medium-facing surface; a yoke magnetic film disposed adjacent to the main pole; and a non-magnetic electrode disposed parallel to the yoke magnetic film to serve as an electric line parallel to the spin torque oscillator, and disposed outside of a trailing gap between the main pole and the trailing shield, in which the spin torque oscillator is disposed, wherein the distance from the non-magnetic electrode to the medium-facing surface is less than the distance from the yoke magnetic film to the medium-facing surface.