A magnetic cell includes: a first ferromagnetic layer whose magnetization
is substantially fixed in a first direction; a second ferromagnetic layer
whose magnetization is substantially fixed in a second direction opposite
to the first direction; a third ferromagnetic layer provided between the
first and the second ferromagnetic layers, a direction of magnetization
of the third ferromagnetic layer being variable; a first intermediate
layer provided between the first and the third ferromagnetic layers; and
a second intermediate layer provided between the second and the third
ferromagnetic layers. The direction of magnetization of the third
ferromagnetic layer can be determined under an influence of
spin-polarized electrons upon the third ferromagnetic layer by passing a
current between the first and the second ferromagnetic layers.