An MRAM device comprising an array of MRAM elements, with each element
having an MRAM bit influenced by a magnetic field from a current flowing
through a conductor, also includes a magnetic keeper formed adjacent the
conductor to advantageously alter the magnetic field. The magnetic keeper
alters the magnetic field by concentrating the field within the keeper
thereby reducing the extent in which fringe field exists, thus allowing
the MRAM elements to be formed closer to increase the areal density of
the MRAM device. Increase in magnetic field flux due to the magnetic
keeper allows operation of the MRAM device with lowered power. Soft
magnetic materials such as nickel iron, nickel iron cobalt, or cobalt
iron may be used to form the magnetic keeper.