Patent ID: 8609262

Claim:
A MTJ nanopillar structure formed on a bottom electrode in a STT-RAM device, comprising: (a) a synthetic anti-ferromagnetic (SyAF) pinned layer with an AP2/coupling/AP1 configuration; (b) a MgO tunnel barrier that includes an oxygen surfactant layer, said MgO tunnel barrier contacts the AP1 layer; and (c) a composite free layer including at least one NCC layer formed between [Co x Fe (1-X) ] 80 B 20 layers where x is between 10 and 30 , and wherein NCC is a nanocurrent channel layer comprised of R(M) grains that are formed in a metal (M) oxide, nitride, or oxynitride insulator matrix, wherein R is Fe, Ni, or Co, or a combination thereof, and M is a metal, the at least one NCC layer has a thickness less than or equal to a R(M) grain diameter of 10 Angstroms.