According to one embodiment, a magnetic recording head includes a main magnetic pole which applies a recording magnetic field to a magnetic recording medium, an auxiliary magnetic pole which faces the main magnetic pole across a recording gap, a first magnetic bypass layer which is provided in a recording gap in a track direction, and a second magnetic bypass layer which is provided in the recording gap in the track direction and is arranged at a distance from the first magnetic bypass layer in a track width direction.

According to one embodiment, a magnetic recording head includes a main magnetic pole which applies a recording magnetic field to a magnetic recording medium, an auxiliary magnetic pole which faces the main magnetic pole across a recording gap, a first magnetic bypass layer which is provided in a recording gap in a track direction, and a second magnetic bypass layer which is provided in the recording gap in the track direction and is arranged at a distance from the first magnetic bypass layer in a track width direction.

According to one embodiment, a magnetic recording head includes a main magnetic pole which applies a recording magnetic field to a magnetic recording medium, an auxiliary magnetic pole which faces the main magnetic pole across a recording gap, a first magnetic bypass layer which is provided in a recording gap in a track direction, and a second magnetic bypass layer which is provided in the recording gap in the track direction and is arranged at a distance from the first magnetic bypass layer in a track width direction.

According to one embodiment, a magnetic recording head includes a main magnetic pole which applies a recording magnetic field to a magnetic recording medium, an auxiliary magnetic pole which faces the main magnetic pole across a recording gap, a first magnetic bypass layer which is provided in a recording gap in a track direction, and a second magnetic bypass layer which is provided in the recording gap in the track direction and is arranged at a distance from the first magnetic bypass layer in a track width direction.

A dual PMR writer is disclosed wherein a first main pole (MP1) in writer 1 is a mirror image of a second main pole (MP2) in writer 2 with respect to a center plane aligned orthogonal to the air bearing surface (ABS). MP1 and MP2 may have an asymmetrical top-down shape to reduce writer-writer spacing (WWS) and read write offset (RWO) when a single or double reader is positioned down-track at the center plane. Accordingly, there is less track misregistration and better area density capability. Each of MP1 and MP2 as well as a top yoke (TY), and a tapered bottom yoke (tBY) have a rectangular back portion of width w from 4 to 10 microns. Spacing between MP1 and MP2 back portions may be 4 microns to prevent cross-talk. RWO is reduced from 4 microns for symmetrical TY/MP/tBY shapes to 3 microns or less for asymmetrical shapes.

A dual PMR writer is disclosed wherein a first main pole (MP1) in writer 1 is a mirror image of a second main pole (MP2) in writer 2 with respect to a center plane aligned orthogonal to the air bearing surface (ABS). MP1 and MP2 may have an asymmetrical top-down shape to reduce writer-writer spacing (WWS) and read write offset (RWO) when a single or double reader is positioned down-track at the center plane. Accordingly, there is less track misregistration and better area density capability. Each of MP1 and MP2 as well as a top yoke (TY), and a tapered bottom yoke (tBY) have a rectangular back portion of width w from 4 to 10 microns. Spacing between MP1 and MP2 back portions may be 4 microns to prevent cross-talk. RWO is reduced from 4 microns for symmetrical TY/MP/tBY shapes to 3 microns or less for asymmetrical shapes.

A slider comprises an air bearing surface (ABS) and is configured to interact with a magnetic recording medium. A writer is provided on the slider and comprises a write coil having a media-facing surface situated at the ABS. Cooling arms project laterally from peripheral surfaces of the write coil and extend along the ABS. The media-facing surface of the write coil and the cooling arms are exposed to the ABS to facilitate increased cooling of the write coil at the ABS.

A slider comprises an air bearing surface (ABS) and is configured to interact with a magnetic recording medium. A writer is provided on the slider and comprises a write coil having a media-facing surface situated at the ABS. Cooling arms project laterally from peripheral surfaces of the write coil and extend along the ABS. The media-facing surface of the write coil and the cooling arms are exposed to the ABS to facilitate increased cooling of the write coil at the ABS.

A dual PMR writer is disclosed wherein the better of the two writers on a slider is integrated into a head gimbal assembly to improve area density capability mean and sigma values, and the other writer is disabled. Each of a driving coil (DC) and bucking coil (BC) have two outer portions that form a U shape with a front side, and have a center portion connected to each of the two outer portions with a narrow arm in which direct current resistance (DCR) is enhanced during a write process. As a result, when writer (coil) induced write gap (WG) protrusion is overlaid on the dynamic fly height (DFH) protrusion profile, the net WG protrusion profile has a maximum value at a cross-track position aligned with a main pole tip in the better writer thereby substantially minimizing magnetic spacing loss compared with conventional dual PMR writers.

A slider comprises an air bearing surface (ABS) and is configured to interact with a magnetic recording medium. A writer is provided on the slider and comprises a write coil having a media-facing surface situated at the ABS. Cooling arms project laterally from peripheral surfaces of the write coil and extend along the ABS. The media-facing surface of the write coil and the cooling arms are exposed to the ABS to facilitate increased cooling of the write coil at the ABS.