Method for providing a side shield for a magnetic recording transducer
View Patent ↗A magnetic transducer having an air-bearing surface is described. The magnetic transducer includes a nonmagnetic layer on an underlayer, a pole having a plurality of sidewalls, a gap layer on the sidewalls, a seed layer and at least one side shield. The nonmagnetic layer has an aperture therein. The aperture is free of magnetic inclusions at the ABS. The pole is on the underlayer and within the aperture. The seed layer is for the side shield(s) and resides on the gap layer, a portion of the underlayer and a portion of the nonmagnetic layer. The side shield(s) residing on the seed layer and in the aperture. The side shield(s) are free of undercuts at the ABS.
1. A magnetic transducer having an air-bearing surface (ABS) and an underlayer, the magnetic transducer comprising:
a nonmagnetic layer on the underlayer and having an aperture therein, the aperture being free of magnetic inclusions at the ABS;
a pole having a plurality of sidewalls, the pole residing on the underlayer and within the aperture;
a gap layer residing on the sidewalls
a seed layer for a side shield, the seed layer residing on the gap layer, a portion of the underlayer and a portion of the nonmagnetic layer;
at least one side shield residing on the seed layer and in the aperture, the at least one side shield being free of undercuts at the ABS.
2. The magnetic transducer of claim 1 wherein the seed layer is a nonmagnetic seed layer.
3. The magnetic transducer of claim 1 wherein the seed layer is a magnetic seed layer.
4. The magnetic transducer of claim 1 wherein the at least one side shield includes a canted region, the canted region being canted at an angle from the ABS, the angle being at least fifteen degrees and not more than twenty-five degrees.
5. A magnetic recording disk drive comprising:
a slider; and
a magnetic transducer having an air-bearing surface (ABS), the magnetic transducer including an underlayer, a nonmagnetic layer, a pole, a gap, at least one shield, a gap, a seed layer, the nonmagnetic layer being on the underlayer and having an aperture therein, the aperture being free of magnetic inclusions at the ABS, the pole having a plurality of sidewalls, the pole residing on the underlayer and within the aperture, the gap layer residing on the sidewalls, the seed layer being for the at least one side shield, the seed layer residing on the gap layer, a portion of the underlayer and a portion of the nonmagnetic layer, the at least one side shield residing on the seed layer and in the aperture, the at least one side shield being free of undercuts at the ABS.