Magnetic capping layer structure for a spin torque oscillator

摘要

In one embodiment, a magnetic recording head includes: a main pole configured to generate a magnetic field for recording data on a magnetic recording medium; an oscillation device positioned above the main pole in a track direction, the oscillation device being configured to generate a high-frequency magnetic field; a magnetic capping layer positioned above the oscillation device in the track direction, the magnetic layer having a front region at a media facing side (MFS) of the magnetic recording head and a rear region positioned behind the front region in an element height direction, wherein a thickness of the front region of the magnetic capping layer is less than a thickness of the rear region thereof; and a trailing shield positioned above the magnetic capping layer in the track direction.

主权项

1. A magnetic recording head, comprising:
a main pole configured to generate a magnetic field for recording data on a magnetic recording medium; an oscillation device positioned above the main pole in a track direction, the oscillation device being configured to generate a high-frequency magnetic field; a magnetic capping layer positioned above the oscillation device in the track direction, the magnetic capping layer having a front region at a media facing side (MFS) of the magnetic recording head and a rear region positioned behind the front region in an element height direction, wherein a thickness of the front region of the magnetic capping layer is less than a thickness of the rear region thereof, wherein at least a portion of an upper surface of the magnetic capping layer is angled at a first angle of inclination greater than 0° and less than 90° relative to a plane of deposition of the magnetic recording head, wherein a lower surface of the magnetic capping layer is angled at a second angle of inclination greater than 0° and less than 90° relative to the plane of deposition of the magnetic recording head, the second angle of inclination being less than the first angle of inclination; and a trailing shield positioned above the magnetic capping layer in the track direction.