Patent ID: 7205596

Claim:
A magnetoresistive memory element including a stacked structure comprising: a ferromagnetic reference region including a fixed magnetization; a ferromagnetic free region including a free magnetization that is free to be switched between oppositely aligned directions with respect to an easy axis thereof; and a tunneling barrier comprising a non-magnetic material; wherein: the ferromagnetic reference and free regions and the tunneling barrier together form a magnetoresistive tunneling junction; the ferromagnetic free region comprises a plurality of N ferromagnetic free layers being magnetically coupled such that magnetizations of adjacent ferromagnetic free layers are in antiparallel alignment, where N is an integer greater than or equal to two; and the ferromagnetic free region further comprises at least one ferromagnetic decoupling layer including frustrated magnetization in orthogonal alignment to ferromagnetic free layer magnetizations and being arranged in between adjacent ferromagnetic free layers.