Patent ID: 11942128
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A magnetic memory device, comprising:
a pinned magnetic pattern and a free magnetic pattern that are sequentially stacked on a substrate;
a tunnel barrier pattern between the pinned magnetic pattern and the free magnetic pattern;
a top electrode on the free magnetic pattern; and
a capping pattern between the free magnetic pattern and the top electrode,
wherein the capping pattern includes:
a lower capping pattern;
an upper capping pattern between the lower capping pattern and the top electrode;
a first non-magnetic pattern between the lower capping pattern and the upper capping pattern; and
a second non-magnetic pattern between the first non-magnetic pattern and the upper capping pattern,

each of the lower capping pattern and the upper capping pattern including a non-magnetic metal, and
the first non-magnetic pattern and the second non-magnetic pattern including different metals from each other, and
wherein the first non-magnetic pattern includes a first metal, the second non-magnetic pattern includes a second metal different from the first metal, and each of the first metal and the second metal has an oxidation potential greater than an oxidation potential of the non-magnetic metal included in each of the lower capping pattern and the upper capping pattern.