Perpendicular magnetic recording head with dynamic flying height heating element
AssigneeWestern Digital (Fremont), LLC
InventorsSuping Song, Kroum S. Stoev
Life of this patent
Estimating the term…
Abstract
A magnetic head includes a slider having an air bearing surface (ABS) and a trailing surface, with a transducer fabricated on the trailing surface. The transducer includes an adjunct pole disposed in a first general plane, the adjunct pole having a front edge that is recessed from the ABS and a rear edge. A main pole of the transducer is formed adjacent the adjunct pole, the main pole having a write tip that extends approximately to the ABS. A write coil having a first layer of turns is disposed in a second general plane below the adjunct pole. The magnetic head further includes a heating element, a portion of the heating element being disposed in the first general plane behind the rear edge of the adjunct pole.
Claims22
A magnetic head for perpendicular magnetic recording comprising:
- a slider having an air bearing surface (ABS) and a trailing surface;
- a transducer fabricated on the trailing surface, the transducer including:
- an adjunct pole disposed in a first general plane, the adjunct pole having a front edge that is recessed from the ABS and a rear edge;
- a main pole formed in an adjacent layered relationship to the adjunct pole, the main pole having a write tip that extends approximately to the ABS;
- a write coil having a first layer of turns disposed in a second general plane below the adjunct pole wherein the write coil further includes a second layer of turns disposed in a third general plane above the main pole;
- and
- a heating element, a portion of the heating element being disposed in the first general plane behind the rear edge of the adjunct pole.
A magnetic head comprising:
- a slider body having a trailing surface and an air-bearing surface (ABS);
- a magnetic reproducing element fabricated on the trailing surface, the magnetic reproducing element including:
- a magnetoresistive (MR) read element disposed within a gap material bounded by shield material;
- a magnetic recording element fabricated on the trailing surface, the magnetic recording element including:
- an adjunct pole disposed in a first general plane, the adjunct pole having a front edge that is recessed from the ABS and a rear edge located a first distance from the ABS;
- a main pole disposed on top of the adjunct pole, the main pole having a write tip that extends approximately to the ABS;
- a coil having first and second turn layers, the first layer of turns being disposed in a second general plane below the adjunct pole and above the magnetic reproducing element, and the second layer of turns being disposed in a third general plane above the main pole;
- a heating element, a first portion of the heating element being disposed in the first general plane behind the rear edge of the adjunct pole.
A magnetic head for perpendicular magnetic recording comprising:
- a slider having an air bearing surface (ABS) and a trailing surface;
- a transducer fabricated on the trailing surface, the transducer including:
- an adjunct pole disposed in a first general plane, the adjunct pole having a front edge that is recessed from the ABS and a rear edge;
- a main pole formed in an adjacent layered relationship to the adjunct pole, the main pole having a write tip that extends approximately to the ABS, wherein the main pole is disposed on top of the adjunct pole;
- a write coil having a first layer of turns disposed in a second general plane below the adjunct pole;
- and
- a heating element, a portion of the heating element being disposed in the first general plane behind the rear edge of the adjunct pole.
Dependencies are inferred from the claim text.