Patent ID: 9287321
Filing Date: 2016-03-15
CPC Classification: B82Y,G11C,H01L

Claim Text:
1. A magnetic tunnel junction device comprising: a free layer magnetizable in a variable direction; a pinned layer having a magnetization in a pinned direction; a tunnel insulating layer between the free layer and the pinned layer; and an antiferromagnetic layer, wherein the pinned layer is between the tunnel insulating layer and the antiferromagnetic layer, wherein the pinned layer comprises a first ferromagnetic layer, a second ferromagnetic layer and an amorphous metal layer between the first ferromagnetic layer and the second ferromagnetic layer, wherein a thickness of the amorphous metal layer is greater than a thickness of the first ferromagnetic layer and the second ferromagnetic layer, and wherein a crystallization temperature of the amorphous metal layer is higher than a crystallization temperature of the first ferromagnetic layer and the second ferromagnetic layer.