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

Claim 18:
19. A magnetic device comprising:
a first electrode and a second electrode on a substrate; and
a magnetic tunnel junction (MTJ) structure between the first electrode and the second electrode, the MJT structure including a first fixed pattern having perpendicular magnetic anisotropy (PMA), an exchange coupling pattern, a second fixed pattern having PMA, a tunnel barrier, and a free layer having PMA, which are sequentially stacked,
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.