Beveled writing pole of a perpendicular writing element
AssigneeSeagate Technology LLC
InventorsMartin L. Plumer, Nurul Amin, Vee S. Kong, Richard P. Michel, Johannes Van ek
Life of this patent
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Abstract
A beveled writing pole includes a top portion, a beveled portion, and a throat portion. The top portion has an end that defines a writing pole tip. The beveled portion adjoins the top portion and has a bevel that extends from the writing pole tip and increases a thickness of the writing pole proximate the pole tip. The throat portion is formed of the top and beveled portions and has tapered sides that extend from the writing pole tip and increase a width of the writing pole proximate the writing pole tip. A method of forming the beveled writing pole is also presented.
Claims22
A method of forming a beveled writing pole of a perpendicular writing element comprising steps of:
- (a) forming a ramped step having a high side, a low side, and a ramp portion connecting the high side to the low side;
- (b) forming a writing pole portion on the ramped step having a top portion overlaying a beveled portion;
- and
- (c) defining a pole tip of the writing pole portion having an air bearing surface and a thickness substantially corresponding to a thickness of the top portion.
A method of forming a writing pole of a perpendicular writing element comprising steps of:
- (a) forming a ramped step having a high side, a low side, and a ramp portion connecting the high side to the low side;
- (b) depositing a first magnetic layer over the high side, the low side, and the ramp portion;
- (c) polishing the first magnetic layer down to approximately the high side of the ramped step to form a beveled portion;
- (d) depositing a second magnetic layer over the beveled portion and the high side of the ramped step to form a top portion, the beveled and top portions forming a writing pole portion;
- and
- (e) defining a pole tip of the writing pole portion, the pole tip having an air bearing surface, a thickness substantially corresponding to a thickness of the writing pole portion and a width.
A beveled writing pole formed of a magnetic material comprising:
- a top portion having an end, which defines a writing pole tip;
- a beveled portion adjoining the top portion and having a bevel that extends from the pole tip;
- and
- a throat portion formed of the top and beveled portions and having tapered sides that extend from the writing pole tip;
- wherein the bevel increases a thickness of the writing pole proximate the pole tip, and the tapered sides of the throat portion increase a width of the writing pole proximate the pole tip.
Dependencies are inferred from the claim text.