Magnetic device

A magnetic device comprising:

• a first magnetic layer and a second magnetic layer disposed on opposite sides of an insulating layer, said first and second magnetic layers each having a perpendicular magnetic isotropy;
• a seed layer formed adjacent the first magnetic layer;
• a magnetic field adjustment layer arranged above the second magnetic layer and also having a perpendicular magnetic isotropy;
• and
• a barrier layer formed between the magnetic field adjustment layer and the second magnetic layer, said barrier layer comprising a metal selected from the group consisting of tantalum (Ta), ruthenium (Ru), titanium (Ti), palladium (Pd), platinum (Pt), magnesium (Mg), and aluminum (Al), and having a thickness between about 20 to 50Å,
• wherein the barrier layer comprises a metal alloy.

A magnetic device comprising:

• a first magnetic layer and a second magnetic layer disposed on opposite sides of an insulating layer, said first and second magnetic layers each having a perpendicular magnetic isotropy;
• a seed layer formed adjacent the first magnetic layer;
• a magnetic field adjustment layer arranged above the second magnetic layer and also having a perpendicular magnetic isotropy, wherein the magnetic field adjustment layer comprises a third magnetic layer, a fourth magnetic layer, and a nonmagnetic layer formed between the third magnetic layer and the fourth magnetic layer, and wherein the third magnetic layer and the fourth magnetic layer are anti-ferromagnetically coupled to each other;
• and
• a barrier layer formed between the magnetic field adjustment layer and the second magnetic layer, said barrier layer comprising a metal alloy including a metal selected from the group consisting of tantalum (Ta), ruthenium (Ru), titanium (Ti), palladium (Pd), platinum (Pt), magnesium (Mg), and aluminum (Al), and having a thickness between about 20 to 50Å;
• a fifth magnetic layer having a perpendicular magnetic anisotropy and substantially the same magnetization direction as the first magnetic layer, said fifth magnetic layer formed adjacent the seed layer and on a side opposite the first magnetic layer.