Patent ID: 9166065
Filing Date: 2015-10-20
Classification: B82Y,G11C,H01F,H01L

Abstract:
1. A magnetoresistive effect element comprising: a first magnetic film having a perpendicular magnetic anisotropy and an invariable magnetization direction; a second magnetic film having a perpendicular magnetic anisotropy and a variable magnetization direction; and a nonmagnetic film between the first magnetic film and the second magnetic film, wherein at least one of the first and second magnetic films includes a first magnetic layer, the first magnetic layer includes a rare earth metal, a transition metal, and boron, a concentration of boron in the first magnetic layer is more than 0 at. % and less than 25 at. %, and a concentration of boron in the first magnetic layer varies in a direction parallel with a layer plane of the first magnetic layer.