METHOD AND SYSTEM FOR PROVIDING A THIN PINNED LAYER IN A PERPENDICULAR MAGNETIC JUNCTION USABLE IN SPIN TRANSFER TORQUE MAGNETIC RANDOM ACCESS MEMORY APPLICATIONS

摘要

A magnetic junction usable in a magnetic device and a method for providing the magnetic junction are described. The magnetic junction includes a free layer, a pinned layer and nonmagnetic spacer layer between the free and pinned layers. The free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction. The pinned layer has a perpendicular magnetic anisotropy energy greater than an out-of-plane demagnetization energy. The nonmagnetic spacer layer and the free layer are between the pinned layer and the substrate. The pinned layer has a pinned layer perpendicular magnetic anisotropy energy greater than a pinned layer out-of-plane demagnetization energy and a thickness of not more than thirty Angstroms.