Patent ID: 6943998

Claim:
A tunnel magnetoresistive effective element comprising a ferromagnetic tunnel effective film, a magnetic bias means, a first conductive layer, and a second conductive layer the ferromagnetic tunnel effective film has a free layer, a pinned layer and a tunnel barrier layer sandwiched between the free layer and the pinned layer, the magnetic bias means applying a bias magnetic field to the free layer, the first conductive layer being formed on one surface of the ferromagnetic tunnel effective film so as to be electrically conducted to the ferromagnetic tunnel effective film, the second conductive layer being formed on the other surface of the ferromagnetic tunnel effective film so as to be electrically conducted to the ferromagnetic tunnel effective film, at least one of the first conductive layer and the second conductive layer generating a magnetic field having the same direction as that of the bias magnetic field through a sense current therein.