Provided is a current induced switching magnetoresistance device
comprising a magnetic multilayer composed of a first ferromagnetic layer,
a nonferromagnetic layer, and a second ferromagnetic layer, wherein the
first ferromagnetic layer has an upper electrode, the second
ferromagnetic layer pinned by an antiferromagnet, wherein the
antiferromagnet contains a lower electrode at its lower part, and the
second ferromagnetic layer is embedded with a nano oxide layer. It is
preferable to have at least a part of the lower electrode in contact with
the second ferromagnetic layer. The magnetoresistance device provides a
lower critical current (Ic) for the magnetization reversal and has an
increased resistance.