Magneto-resistance effect film and memory using it

The magneto-resistance effect film of the present invention comprises a first magnetic layer (111) consisting of a perpendicularly magnetized film, a second magnetic layer (113) consisting of a perpendicularly magnetized film stacked above said first magnetic layer, and a non-magnetic layer (112) sandwiched between said first and second magnetic layers, wherein there is provided a first magnetic region (114) formed in granular shape between one of said first and second magnetic layers and the non-magnetic layer and having a spin polarization greater than that of the one of the first and second magnetic layers and wherein the first magnetic region is arranged to be exchange-coupled with the one of said first and second magnetic layers.