A voltage-controlled magnetization reversal writing type Magnetic Random
Access Memory (MRAM) device. The MRAM device includes electrically
conductive base electrodes, a piezoelectric layer, an insulation layer, a
free ferromagnetic layer, a nonmagnetic layer, a pinned ferromagnetic
layer, an antiferromagnetic layer and two electrically conductive reading
lines. The electrically conductive base electrodes are provided with two
writing lines having positive and negative electrodes. The left and right
surfaces of piezoelectric layer are disposed to abut the writing lines of
the electrically conductive base electrodes, respectively. The insulation
layer is disposed beneath the piezoelectric layer and is formed to
separate the positive and negative electrodes. The free ferromagnetic
layer is disposed on the insulation layer. The nonmagnetic layer is
disposed on the free ferromagnetic layer. The pinned ferromagnetic layer
is disposed on the nonmagnetic layer. The antiferromagnetic layer is
disposed on the pinned ferromagnetic layer. The two electrically
conductive reading lines are formed to be perpendicular to each other.