Patent ID: 9203014
Filing Date: 2015-12-01
Classification: G11C,H01F,H01L

Abstract:
1. A magnetic memory device comprising: a free magnetic structure; a tunnel barrier layer; and a pinned magnetic structure wherein the tunnel barrier layer is between the free magnetic structure and the pinned magnetic structure, wherein the pinned magnetic structure includes first and second pinned layers and an exchange coupling layer between the first and second pinned layers, wherein the second pinned layer is between the first pinned layer and the tunnel barrier layer, wherein the second pinned layer includes a junction magnetic layer and a buffer layer between the junction magnetic layer and the exchange coupling layer, and wherein the buffer layer comprises a layer of a material including a non-magnetic metallic element, wherein the junction magnetic layer and the buffer layer have different crystallization characteristics, and wherein a degree of crystallinity of the junction magnetic layer is higher than a degree of crystallinity of the buffer layer.