A tunneling magnetoresistance device with high magnetoimpedance effect, a
first ferromagnetic layer, a second ferromagnetic layer, and a tunnel
barrier layer which is located between the first ferromagnetic layer and
the second ferromagnetic layer. Wherein an alternating current is applied
to the tunneling magnetoresistance device, the tunneling
magnetoresistance device has at least 100% variation of real components
between an applied first alternating frequency and an applied second
alternating frequency, at least 25% variation of imaginary components
below the first alternating frequency, and at least 8.5% variation of
magneto capacitance (MC) ratio which are generated along the
magnetization direction.