A magnetically-coupled structure has two ferromagnetic layers with their
in-plane magnetization directions coupled orthogonally across an
electrically-conducting spacer layer that induces the direct orthogonal
magnetic coupling. The structure has application for in-stack biasing in
a current-perpendicular-to-the-plane (CPP) magnetoresistive sensor. One
of the ferromagnetic layers of the structure is a biasing ferromagnetic
layer and the other ferromagnetic layer is the sensor free layer. An
antiferromagnetic layer exchange-couples the biasing layer to fix its
moment parallel to the moment of the sensor pinned layer. This allows a
single annealing step to be used to set the magnetization direction of
the biasing and pinned layers. The electrically-conducting spacer layer,
the biasing layer and the antiferromagnetic layer that exchange-couples
the biasing layer may all extend beyond the edges of the sensor stack.