An optimal write conductor layout structure for improved MRAM performance
is disclosed. A write conductor layout structure for a magnetic memory
cell includes a data storage layer having a first layer width in a first
direction and a second layer width in a second direction. The data storage
layer is positioned between a first conductor having a first width in the
first direction and a second conductor having a second width in the second
direction. The first and second conductors cross the data storage layer in
the first and second directions respectively. The first width of the first
conductor is less than the first layer width of the data storage layer and
the first width of the first conductor is positioned so that the first
layer width overlaps the entirety of the first width of the first
conductor. The second width of the second conductor is less than the
second layer width of the data storage layer and the second width of the
second conductor is positioned so that the second layer width overlaps the
entirety of the second width of the second conductor. The narrow widths of
the first and second conductors eliminates misalignment between the
conductors and the data storage layer, reduces leakage of a write magnetic
field generated by currents applied to the first and second conductors,
and can generate the write magnetic field with less current thereby
reducing power consumption in the memory cell.