Patent ID: 8698260
Filing Date: 2014-04-15
Classification: B82Y,G11C,H01F,H01L

Abstract:
1. A magnetic tunnel junction (MTJ) element including a ferromagnetic layer with at least two interfaces that produce interfacial perpendicular anisotropy, comprising: (a) a tunnel barrier layer; (b) the ferromagnetic layer that has a first interface with said tunnel barrier layer and a second interface with a perpendicular Hk enhancing layer formed on a surface of the ferromagnetic layer that is opposite a surface adjoining the tunnel barrier layer, the ferromagnetic layer comprises a glassing agent (G) made of Mo or W and having a first concentration in a middle portion thereof and a second concentration less than the first concentration but greater than zero in portions of the ferromagnetic layer proximate to the first and second interfaces; and (c) the perpendicular Hk enhancing layer.