Reset of magnetic domains in write head via external field
AssigneeSeagate Technology LLC
InventorsYanzhang Liu, Kirill Rivkin, Lei Lu, Huaqing Yin
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Abstract
Methods of removing a magnetic domain from a slider structure, such as a shield in a write head, in a data storage assembly. The method comprises passing the slider structure in close proximity to a decaying magnetic field of at least 100 Oe and no more than 1500 Oe originating from within the storage assembly. In some implementations the decaying magnetic field has an oscillating polarity.
Claims20
A method of removing a magnetic domain from a slider structure in a data storage assembly, the method comprising:
- passing the slider structure in close proximity to a non-randomly decaying magnetic field of at least 100 Oe and no more than 1500 Oe originating from within the storage assembly.
A method of removing a magnetic domain from a shield of a write head, the method comprising:
- exposing the write head to a magnetic field oscillating between at least +100 Oe and −100 Oe and no more than +1500 Oe and −1500 Oe.
The method of claim Ti, wherein the magnetic field oscillates smoothly.
A magnetic data storage assembly comprising:
- an enclosure;
- a slider in the enclosure, the slider comprising a write head;
- and
- a magnetic field source in the enclosure, the source configured to provide a decaying magnetic field oscillating between at least +100 Oe and −100 Oe and no more than +1500 Oe and −1500 Oe.
Dependencies are inferred from the claim text.