MAGNETIC RECORDING HEAD AND DISK DEVICE WITH THE SAME

摘要

According to one embodiment, a magnetic recording head includes an air bearing surface, a magnetic pole having a distal end portion, a write shield opposed to the distal end portion of the magnetic pole across a write gap, and a high-frequency oscillator between the magnetic pole and the write shield in the write gap. The high-frequency oscillator includes a spin injection layer, an intermediate layer and an oscillation layer which are stacked in a head travel direction. A film thickness of the spin injection layer in the head travel direction at a height position away from the air bearing surface is greater than a film thickness of the spin injection layer in the head travel direction on the air bearing surface.

主权项

1. A magnetic recording head comprising:
an air bearing surface; a magnetic pole which comprises a distal end portion extending to the air bearing surface and is configured to produce a recording magnetic field; a write shield opposed to the distal end portion of the magnetic pole across a write gap; and a high-frequency oscillator provided between the magnetic pole and the write shield in the write gap and connected to the magnetic pole and the write shield, wherein the high-frequency oscillator comprises a spin injection layer, an intermediate layer and an oscillation layer which are stacked in a head travel direction, and each of the oscillation layer and the spin injection layer comprises a stack surface extending in a direction intersecting with the air bearing surface, and a film thickness of the spin injection layer in the head travel direction at a height position away from the air bearing surface is greater than a film thickness of the spin injection layer in the head travel direction on the air bearing surface.