Patent ID: 8470462
Filing Date: 2013-06-25
Classification: B82Y,C23C,G11C,H01F,H01L,Y10T

Abstract:
1. 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 wherein AP2 and AP1 are ferromagnetic layers separated by a coupling layer; (b) a MgO tunnel barrier that forms an interface with the AP1 layer; and (c) a composite free layer that forms an interface with the MgO tunnel barrier, and having a FL1/NCC/FL2, FL1/NCC/FL2/NCC, or FL1/NCC/FL2/NCC/FL3 configuration wherein FL1, FL2, and FL3 are magnetic layers and NCC is a nanocurrent channel layer comprised of R(M) grains having a certain grain diameter size that are formed in a metal (M) oxide, nitride, or oxynitride insulator matrix, R is Fe, Ni, or Co, or a combination thereof with a 20 atomic % content in a NCC layer, and M is a metal.