A method and apparatus for providing magnetostriction control in a
synthetic free layer of a magnetic memory device is disclosed. A first
free layer of CoFe alloy has a first thickness. A second free layer of
NiFe alloy has a second thickness. At least one of the CoFe alloy and
NiFe alloy includes at least one of B, P, Si, Nb, Zr, Hf, Ta and Ti. The
relative thicknesses of the first and second free layer are modified to
obtain a desired magnetostriction without a change in the
magenetoristance ratio, .DELTA.R/R. The synthetic free layer may also be
configured to have a net magnetic moment. A sensor may be a
current-in-plane or a current-perpendicular-to-the-plane sensor. The
sensor also may be configured to be a GMR sensor or a TMR sensor.