Magnetic write head having resistive heater coil

Details Magnetic write head having resistive heater coil Magnetic write head having resistive heater coil

2007-10-16

2007-10-16

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Coil

C360S128000, C360S294700, C360S075000

Reexamination Certificate

active

11451770

ABSTRACT:
A magnetic write head includes a magnetic yoke having a first pole and a second pole. The first pole and the second pole each terminate at an air bearing surface. The first pole is magnetically coupled to the second pole in a backgap region. The magnetic write head further includes a electrically conductive write coil magnetically coupled to the magnetic yoke. The magnetic write head further includes a resistive heater coil having a first coil turn and a second coil turn. The heater coil is electrically isolated from the write coil. At least a portion of the first coil turn is between the first pole and the second pole and between the air bearing surface and the backgap region. At least a portion of the second coil turn is between the first pole and the second pole and between the air bearing surface and the backgap region. The portion of the first coil turn overlaps the portion of the second coil turn.

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