Patent ID: 7683446

Claim:
A magnetic memory comprising: a plurality of storage areas in a two-dimensional array, each of the plurality of storage areas including: a single transistor; a magneto-resistance effect element comprising a magnetosensing layer, nonmagnetic layer and fixed layer laminated together; a write interconnection generating magnetic force lines supplied to the magnetosensing layer; a magnetic yoke completely surrounding the circumference of the write interconnection; and a read interconnection electrically connected to the magneto-resistance effect element; and a controller that provides a first current to each transistor to generate a spin injection flux reversal during data writing, and a second current to each transistor during data reading, wherein, in the magneto-resistance effect element, the surface area of the fixed layer is smaller than the surface area of the magnetosensing layer, the single transistor being electrically connected to the magneto-resistance effect element in the corresponding storage area, and the first current is greater than a predetermined value, and the second current is less than the predetermined value.