Writer With Patterned Hot Seed Layer
AssigneeHeadway Technologies, Inc.
InventorsHaowen Ren, Weihao Xu, Yuxuan Xiao, Shehrin Sayed, Yue Liu, Yan Wu, Yuhui Tang
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Abstract
The present embodiments relate to a write head design with a patterned hot seed (HS). Particularly, the HS can be patterned as part of a multi-step patterning process that can partially or completely remove portions of the HS at multiple sides to form various designs. For example, the HS can have a two-step cliff design, etching multiple steps around an un-patterned center portion, and a flared angle. The designs of the patterned HS can improve write head performance.
Claims20
A write head for a disk drive, the write head comprising:
- a main pole (MP);
- a trailing shield (MP);
- a write gap (WG) between the MP and TS;
- and
- a hot seed (HS) deposited on top of the WG and extending into an air-bearing surface (ABS) of the write head, wherein the HS is patterned to comprise one or more steps and a flared end disposed at a flared angle relative to the ABS.
A device comprising:
- a main pole (MP) configured to concentrate a magnetic flux;
- a trailing shield (MP);
- a write gap (WG) between the MP and TS, the WG comprising a non-magnetic material;
- a side shield, leading shield, and a write shield disposed adjacent to the MP and configured to prevent magnetic flux from reaching areas outside of a desired area;
- and
- a hot seed (HS) deposited on the WG and extending into an air-bearing surface (ABS), wherein the HS is patterned to comprise one or more steps and a flared end disposed at a flared angle relative to the ABS.
A write head comprising:
- a main pole (MP);
- a trailing shield (MP);
- a write gap (WG) between the MP and TS;
- and
- a hot seed (HS) deposited on top of the WG and extending into an air-bearing surface of the write head, wherein the HS is patterned to include a discrete two-step cliff design that includes two steps etched between a central portion, wherein the steps are etched to an etching depth.
Dependencies are inferred from the claim text.