Method of making a magnetic recording head
AssigneeWestern Digital (Fremont), LLC
InventorsShaoping Li, Ge Yi, Feng Liu
Life of this patent
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Abstract
A magnetic recording head comprises a write pole including a throat region with a leading edge, a trailing edge opposite the leading edge, and first and second side edges opposite one another. The magnetic recording head further comprises a first side wall gap layer disposed alongside the first side edge of the throat region, and a second side wall gap layer disposed alongside the second side edge of the throat region. Each of the first and second side wall gap layers has a first width at the leading edge of the throat region smaller than a second width at the trailing edge of the throat region.
Claims10
A method of making a magnetic recording head, comprising the steps of:
- forming a write pole extending above a field area;
- forming shadowing structures on opposite sides of the write pole;
- depositing a side wall gap material onto opposing faces of the write pole in at least a throat region, whereby side wall gap layers are formed on the opposing faces of the writer pole;
- and
- forming side shields on opposite sides of the write pole adjacent the side wall gap layers, the side shields extending at least from a leading edge to a trailing edge;
- wherein the shadowing structures are configured to shadow a lower portion of the write pole such that the deposited side wall gap layers are thinner adjacent the lower portion and thicker adjacent a region above the lower portion and such that a width of the deposited side wall gap layers monotonically increases from the leading edge of the throat region to the trailing edge of the throat region.
Dependencies are inferred from the claim text.