Patent ID: 8878321
Filing Date: 2014-11-04
Classification: H01L

Abstract:
1. A magnetoresistive element comprising: a first magnetic layer, in which a magnetization direction is variable and is perpendicular to a film surface; a tunnel barrier layer that is formed on the first magnetic layer; and a second magnetic layer that is formed on the tunnel barrier layer, a magnetization direction of the second magnetic layer being invariable and being perpendicular to the film surface, wherein the second magnetic layer comprises a body layer that constitutes an origin of perpendicular magnetic anisotropy, and an interface layer that is formed between the body layer and the tunnel barrier layer, the interface layer having a permeability higher than that of the body layer and a planar size larger than that of the body layer, wherein a shielding layer having a permeability higher than that of the body layer is formed on a side surface of the body layer, and the shielding layer is formed into a tapered shape in which a film thickness increases from a lower portion side toward an upper portion side, and wherein a closest distance between the interface layer and the shielding layer is less than or equal to 10 nm.