US 11,935,677 B2
Magnetic device
Younghyun Kim, Seoul (KR); Sechung Oh, Yongin-si (KR); Naoki Hase, Hwaseong-si (KR); Heeju Shin, Seoul (KR); and Junghwan Park, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jun. 17, 2021, as Appl. No. 17/350,157.
Claims priority of application No. 10-2020-0137476 (KR), filed on Oct. 22, 2020.
Prior Publication US 2022/0130581 A1, Apr. 28, 2022
Int. Cl. H01F 10/32 (2006.01); G11C 11/16 (2006.01); H01F 1/00 (2006.01); H10B 61/00 (2023.01); H10N 50/10 (2023.01); H10N 50/80 (2023.01); H10N 50/85 (2023.01)
CPC H01F 10/3254 (2013.01) [H01F 1/0063 (2013.01); H01F 10/3272 (2013.01); H01F 10/329 (2013.01); H10B 61/22 (2023.02); H10N 50/10 (2023.02); H10N 50/80 (2023.02); G11C 11/161 (2013.01); H10N 50/85 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A magnetic device comprising:
a fixed layer having perpendicular magnetic anisotropy (PMA) and including a fixed pattern, a free layer having PMA, and a tunnel barrier between the fixed layer and the free layer, wherein the fixed pattern comprises:
a first magnetic pattern;
a second magnetic pattern; and
a hybrid spacer, including a nonmagnetic material layer, between the first magnetic pattern and the second magnetic pattern, the nonmagnetic material layer including a plurality of magnetic nanoparticles dispersed therein, the plurality of magnetic nanoparticles having sizes in a range from about 0.001 nm to about 2 nm.