US 12,230,436 B2
Spacer to reduce magnetic coupling
Yuan Yao, Tarrytown, NY (US); Todd Edward Takken, Brewster, NY (US); Xin Zhang, Chappaqua, NY (US); Andrew Ferencz, Southborough, MA (US); and Shurong Tian, Mount Kisco, NY (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Nov. 25, 2020, as Appl. No. 17/104,173.
Prior Publication US 2022/0165488 A1, May 26, 2022
Int. Cl. H01F 27/24 (2006.01); H01F 27/06 (2006.01); H01F 27/28 (2006.01); H01F 27/34 (2006.01)
CPC H01F 27/34 (2013.01) [H01F 27/06 (2013.01); H01F 27/24 (2013.01); H01F 27/2804 (2013.01); H01F 2027/065 (2013.01); H01F 2027/348 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A magnetic device, comprising:
a lower magnetic construct comprising a center post located between a pair of outer posts;
an upper magnetic construct, coupled to the lower magnetic construct, such that a magnetic gap is formed between a bottom surface of the upper magnetic construct and at least a top surface of the center post of the lower magnetic construct, wherein the upper magnetic construct includes two or more spacers that protrude from the bottom surface of the upper magnetic construct, the two or more spacers formed from a same material as the upper magnetic construct; and
a middle construct, comprising a plurality of conductive layers, disposed below the top surface of the center post of the lower magnetic construct, wherein a top surface of the middle construct is coupled to a bottom surface of the two or more spacers protruding from the bottom surface of the upper magnetic construct, and wherein the two or more spacers are used to control a distance of the top surface of the middle construct from the top surface of the center post of the lower magnetic construct.