Patent ID: 7535069

Claim:
A semiconductor device formed between a wordline and a bitline, the wordline and bitline being arranged substantially orthogonal to one another, the semiconductor device comprising: a growth layer, the growth layer comprising tantalum and having a thickness greater than about 75 Angstroms; an antiferromagnetic layer, the antiferromagnetic layer being formed on the growth layer; a pinned layer, the pinned layer being formed on the antiferromagnetic layer and comprising one or more pinned ferromagnetic sublayers; a tunnel barrier layer, the tunnel barrier being formed on the pinned layer and comprising magnesium oxide; and a free layer, the free layer being formed on the tunnel barrier layer and comprising two or more free ferromagnetic sublayers, each free ferromagnetic sublayer having a magnetic anisotropy axis that is oriented about 45 degrees from the wordline and bitline.