A magnetic data storage cell, applicable to spin-torque random access
memory (ST-RAM), is disclosed. A magnetic cell includes first and second
fixed magnetic layers and a free magnetic layer positioned between the
fixed magnetic layers. The magnetic cell also includes terminals
configured for providing a spin-polarized current through the magnetic
layers. The first fixed magnetic layer has a magnetization direction that
is substantially parallel to the easy axis of the free magnetic layer,
and the second fixed magnetic layer has a magnetization direction that is
substantially orthogonal to the easy axis of the free magnetic layer. The
dual fixed magnetic layers provide enhanced spin torque in writing to the
free magnetic layer, thereby reducing the required current and reducing
the feature size of magnetic data storage cells, and increasing the data
storage density of magnetic spin torque data storage.