摘要:
Methods for manufacturing electronic lapping guides (ELGs) for writer heads that closely track the pole formation of the writer heads are provided. Once such method includes forming an ELG adjacent to a writer head that is subjected to substantially all of the sub-processing actions associated with the pole formation of the writer head, lapping the pole material, measuring a resistance of the ELG during the lapping, comparing the measured resistance with a target resistance, and terminating the lapping based on the comparison of the measured resistance with the target resistance.
摘要:
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.
摘要:
A method of forming a wrapped-around shielded perpendicular magnetic recording writer pole is disclosed. A structure comprising a leading shield layer and an intermediate layer disposed over the leading shield layer is provided, the intermediate layer comprising a pole material and a dielectric material. A trench is formed in the dielectric material. A non-magnetic layer in the trench is removed via an ion beam etching process. A seed layer is deposited in the trench and over the pole material. A magnetic material comprising a side shield layer is deposited on at least a portion of the seed layer.
摘要:
A method and system provide a magnetic transducer having an air-bearing surface (ABS). The magnetic transducer includes a main pole and at least one coil for energizing the main pole. The coil(s) have a number of turns. The magnetic transducer also includes at least one shunt coupled to at least one of the number of turns. At least one remaining turn of the number of turns carries a current. The shunt(s) carry a portion of the current from the shunted turn of the number of turns. Thus, the coil(s) have an effective number of turns is less than the number of turns.