Magnetic recording head and disk drive provided therewith

摘要

According to one embodiment, a magnetic recording head includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a trailing shield opposed to the main pole with a write gap therebetween, and a high-frequency oscillator between the main pole and the trailing shield in a range of a width of the main pole in a track width direction, and configured to generate a high-frequency magnetic field. The high-frequency oscillator includes a spin injection layer, an intermediate layer, and an oscillation layer, and at least the oscillation layer comprises divided oscillation regions.

主权项

1. A magnetic recording head comprising:
a main pole configured to apply a recording magnetic field to a recording layer of a recording medium; a trailing shield opposed to the main pole with a write gap between the main pole and the trailing shield; and a high-frequency oscillator between the main pole and the trailing shield in a range of a width of the main pole in a track width direction, the high-frequency oscillator configured to generate a high-frequency magnetic field, wherein the high-frequency oscillator comprises a spin injection layer, an intermediate layer, and an oscillation layer, which are laminated in a laminating direction, and at least the oscillation layer comprises a surface perpendicular to the laminating direction, a slit or a notch formed in the surface of the oscillation layer, and oscillation regions divided by the slit or the notch, the oscillation regions of the oscillation layer are aligned in a direction perpendicular to a surface of the recording medium with a gap between the oscillation regions.