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US 10,593,356 B2Granted
Manufacturing method for reader side shield
AssigneeSeagate Technology LLC
InventorsXin Cao, Frances Paula McElhinney, Jiansheng Xu, Marcus Winston Ormston
Life of this patent
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Abstract
A magnetoresistive (MR) sensor shield shields against both down track and cross-track interference and is formed in a single deposition step. A “tail” portion of the shield is eliminated by including a non-magnetic material adjacent to opposite sides of a middle portion of the sensor stack.
Claims7
A method comprising:
- removing non-magnetic material from a front portion of a magnetoresistive (MR) sensor including an air-bearing surface (ABS) while leaving the non-magnetic material in-tact in a middle region of the MR sensor, the middle region being separated from the ABS by the front portion of the MR sensor;
- forming a monolithic shield of the MR sensor in a single deposition operation, the monolithic shield being deposited on the front portion of the MR sensor from which the non-magnetic material was removed and including a top shield element, a first side shield element on a first side of a synthetic anti-ferromagnet (SAF) structure and a second shield element on an opposite side of the SAF structure.
Dependencies are inferred from the claim text.