Method for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorQuan-Chiu Harry Lam
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Abstract
A method for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation is disclosed. The transverse field disposed proximate the pole-tip helps the conventional driving field in rotating the magnetization through the first 90-degrees, especially at small angle where the effective anisotropy-field is strongest in opposing the conventional driving field. By offsetting the magnetization from its easy-axis, the transverse field also increases the torque that the collinear driving field would have on the magnetization.
Claims3
A method for providing assistance in magnetization switching to a pole tip, comprising:
- disposing a magnetic bias field source proximate to and along side the pole tip for switching the pole-tip magnetization;
- and
- causing current to flow through the magnetic bias field source to provide a magnetic bias-field to the pole tip to bias the magnetization of the pole-tip transversely.
Dependencies are inferred from the claim text.