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US 9,286,921 B1Granted
Reader sensor structure having front bottom shield adjacent recessed AFM layer
AssigneeSeagate Technology LLC
InventorsVictor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Abstract
A sensor structure that has a sensor stack comprising a recessed AFM layer, a combined pinned layer/reference layer (PL/RL) directly on the AFM layer, a free layer (FL), and a barrier layer between the PL/RL and the FL. All the magnetic layers between the AFM layer and the FL have substantially the same magnetic orientation. The sensor structure includes a top shield and a front bottom shield adjacent to the recessed AFM layer.
Claims10
A sensor structure comprising:
- a bottom shield;
- a sensor stack comprising:
- a recessed AFM layer,
- a combined pinned layer/reference layer (PL/RL),
- a free layer (FL),
- a barrier layer between the PL/RL and the FL;
- a front bottom shield adjacent to the recessed AFM layer, with the PL/RL positively coupled to the front bottom shield.
4 more elements
A sensor structure comprising:
- a bottom shield;
- a sensor stack consisting essentially of:
- a recessed AFM layer,
- a single combined pinned layer/reference layer (PL/RL),
- a free layer (FL), and
- a barrier layer between the PL/RL and the FL;
- and
- a front bottom shield adjacent to the recessed AFM layer, with the PL/RL positively coupled to the front bottom shield.
5 more elements
Dependencies are inferred from the claim text.