Patent ID: 7283386

Claim:
A voltage-controlled magnetization reversal writing type Magnetic Random Access Memory MRAM device, comprising: electrically conductive base electrodes provided with two writing lines composed of positive and negative electrodes; a piezoelectric layer, left and right surfaces of which are disposed to abut the writing lines of the electrically conductive base electrodes, respectively; an insulation layer disposed beneath the piezoelectric layer and formed to separate the positive and negative electrodes; a free ferromagnetic layer disposed on the piezoelectric layer and formed to have states of magnetization in a planar direction and a direction perpendicular to the planar direction; a nonmagnetic layer disposed on the free ferromagnetic layer; a pinned ferromagnetic layer disposed on the nonmagnetic layer; an antiferromagnetic layer disposed on the pinned ferromagnetic layer; and two electrically conductive reading lines are formed to be perpendicular to each other, the two electrically conductive reading lines comprising a first reading line disposed on an appropriate position above the pinned ferromagnetic layer and a second reading line disposed above the positive electrode of the electrically conductive base electrodes and separated from it by an insulation layer.