Patent ID: 7622784

Claim:
A magnetic random access memory (MRAM) device, comprising: a reference magnetic region consisting of a single ferromagnetic layer having a resultant magnetic moment vector which is stabilized in a desired orientation only in the presence of an offset magnetic field; a storage magnetic region having an anisotropy easy axis and a resultant magnetic moment vector oriented in a position parallel or antiparallel to that of said reference magnetic region; a tunnel barrier disposed between said reference magnetic region and said storage magnetic region; said reference magnetic region, said storage magnetic region and said tunnel barrier defining a storage cell configured for a write operation thereto by a toggle mode; and said storage cell having said offset field applied thereto so as to stabilize said resultant magnetic moment vector of said reference magnetic region in said desired orientation, with said offset field allowing rotation, but not switching, of said resultant magnetic region by between about 30 degrees and about 45 degrees away with respect to a rest orientation during a write operation, wherein a magnitude of said offset magnetic field is smaller in magnitude than a write field applied during the write operation.