Patent ID: 11935677
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 13:
14. A magnetic device comprising:
a fixed layer having perpendicular magnetic anisotropy (PMA), a free layer having PMA, and a tunnel barrier disposed between the fixed layer and the free layer,
wherein the fixed layer comprises a first fixed pattern, a second fixed pattern between the first fixed pattern and the tunnel barrier, an exchange coupling pattern between the first fixed pattern and the second fixed pattern, and
wherein the second fixed pattern comprises:
a first magnetic pattern adjacent to the exchange coupling pattern;
a second magnetic pattern adjacent to the tunnel barrier; 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.