Roughly described, a magnetic structure includes an electrically
conductive path for carrying current flow, a soft magnetic material with
high permeability value in magnetic communication with the current flow
so that it can be magnetized in either of two directions, and a magnetic
device such as a magnetic random access memory cell, having an active
layer that is quantum mechanically or magnetostatically coupled to the
soft magnetic material. The soft magnetic material acts as an
intermediary between the magnetic induction of the current flow and the
magnetization of the active layer of the magnetic device to reduce the
writing current.