Patent ID: 8758909

Claim:
A magnetoresistive element comprising: a free ferromagnetic layer comprising a first reversible magnetization direction directed substantially perpendicular to a film surface; a pinned ferromagnetic layer comprising a second fixed magnetization direction directed substantially perpendicular to the film surface; a nonmagnetic tunnel barrier layer disposed between the free ferromagnetic layer and the pinned ferromagnetic layer and having a direct contact with the free and pinned ferromagnetic layers; a first interface magnetic layer disposed adjacent and having a direct contact with a side of the free ferromagnetic layer opposite to the tunnel barrier layer; a first nonmagnetic conductive layer disposed adjacent and having a direct contact with a side of the first interface magnetic layer opposite to the free ferromagnetic layer; a second interface magnetic layer disposed adjacent and having a direct contact with a side of the pinned ferromagnetic layer opposite to the tunnel barrier layer, and a second nonmagnetic conductive layer disposed adjacent and having a direct contact with a side of the second interface magnetic layer opposite to the pinned layer, wherein the first interface magnetic layer and the second interface magnetic layer comprises a body-centered cubic structure, at least one element selected from the group consisting of Fe, Co, and Ni, and at least one element selected from the group consisting of V, Cr, and Mo, and wherein the first nonmagnetic conductive layer and the second nonmagnetic conductive layers contains at least one element selected from the group consisting of Ta, W, Nb, Mo, V, and Cr, and wherein the free ferromagnetic layer and the pinned ferromagnetic layer contains at least one element selected from the group consisting of Fe, Co, and Ni, at least one element selected from the group consisting from V, Cr, and Mo, and at least one element selected from the group consisting of B, P, C, and Si.