Patent ID: 8035145

Claim:
A magnetic memory device comprising: an invariable pinning pattern and a variable pinning pattern on a substrate; a tunnel barrier pattern between the invariable pinning pattern and the variable pinning pattern; a pinned pattern between the invariable pinning pattern and the tunnel barrier pattern, the pinned pattern configured to have a magnetization direction pinned by the invariable pinning pattern; a storage free pattern between the tunnel barrier pattern and the variable pinning pattern; a guide free pattern between the storage free pattern and the variable pinning pattern, wherein the variable pinning pattern has a first surface contacting the guide free pattern and a second surface opposite the first surface; a high resistance pattern contacting the second surface of the variable pinning pattern and including oxygen and elements included in the variable pinning pattern; and a free reversing pattern between the storage and guide free patterns, the free reversing pattern being configured to reverse a magnetization direction of the storage free pattern and a magnetization direction of the guide free pattern in opposite directions.