US 11,875,828 B2
Magnetic storage reader having a bridge to align magnetic moments
Victor B Sapozhnikov, Minnetonka,, MN (US); Taras Grigorievich Pokhil, Arden Hills,, MN (US); and Mohammed Shariat Ullah Patwari, Edina,, MN (US)
Assigned to Seagate Technology LLC, Fremont, CA (US)
Filed by Seagate Technology LLC, Fremont,, CA (US)
Filed on Oct. 13, 2022, as Appl. No. 18/046,359.
Claims priority of provisional application 63/255,797, filed on Oct. 14, 2021.
Prior Publication US 2023/0122220 A1, Apr. 20, 2023
Int. Cl. G11B 5/39 (2006.01); G11B 5/11 (2006.01)
CPC G11B 5/3912 (2013.01) [G11B 5/11 (2013.01); G11B 5/398 (2013.01); G11B 5/3932 (2013.01); G11B 2005/3996 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A reader of a magnetic recording head, the reader comprising:
a sensor stack;
a first side shield and a second side shield disposed on opposite sides of the sensor stack in a cross-track dimension of the reader; and
a bridge comprising a soft magnetic material having a magnetic permeability that is sufficiently high to enable magnetic moments of the first side shield and the second side shield to produce a magnetic flux density in the bridge that is greater than or equal to about 0.5 Tesla, the bridge configured to align magnetic moments of the first side shield and the second side shield,
wherein the bridge is disposed above the sensor stack relative to a media-facing surface of the reader and proximate to the first side shield and the second side shield.