Patent ID: 9047887
Filing Date: 2015-06-02
Classification: G11B

Abstract:
1. A magnetic recording head comprising: a medium facing surface; a main pole configured to apply a recording magnetic field to a recording layer of a recording medium; a write shield facing the main pole with a write gap interposed therebetween; a recording coil configured to cause the main pole to generate a magnetic field; and a high-frequency oscillator comprising an oscillation layer provided within the write gap between an end portion of the main pole and the write shield, and an intermediate layer and a spin-injection layer stacked on the oscillation layer, wherein the oscillation layer, the intermediate layer and the spin-injection layer are stacked in a direction intersecting a gap length direction of the write gap; at least one of the oscillation layer and the spin-injection layer is electrically connected to one of the main pole and the write shield; the intermediate layer and the spin-injection layer of the high-frequency oscillator are arranged side by side on a single plane that intersects the gap length direction of the write gap and is perpendicular to the medium facing surface; and only the oscillation layer in the high-frequency oscillator is exposed at the medium facing surface within the write gap.