High frequency data writer field generator device
AssigneeSeagate Technology LLC
InventorsKirill Rivkin, Mourad Benakli, Huaqing Yin
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Abstract
A data writing device may be constructed and operated with at least a data writer that has at least a write pole and a magnetic feature. A controller may selectively activate the magnetic feature to magnetically oscillate and produce a radio frequency signal proximal the write pole on an air bearing surface (ABS).
Claims20
An apparatus comprising a data writer comprising a write pole separated from a magnetic feature by a magnetic shield on an air bearing surface (ABS), a controller configured to heat and cool the magnetic feature to magnetically oscillate the magnetic shield to produce a radio frequency signal proximal the write pole on the ABS.
An apparatus comprising a data writer comprising a write pole, first magnetic feature, and second magnetic feature, the first magnetic feature separated from the write pole by a first magnetic shield on an air bearing surface (ABS), the second magnetic feature separated from the write pole and from the ABS by a non-magnetic layer, a controller configured to cyclically heat and cool at least one magnetic feature to magnetically oscillate the first magnetic shield and produce a radio frequency signal in a write gap proximal the write pole on the ABS.
A method comprising:
- configuring a data writer with a write pole separated from a magnetic feature on an air bearing surface (ABS) by a magnetic shield;
- and
- activating the magnetic feature selectively with a controller by repeatedly heating and cooling the magnetic feature to magnetically oscillate the magnetic shield and produce a radio frequency signal proximal the write pole on the ABS.
Dependencies are inferred from the claim text.