In a magnetoresistive effect transducer including a pinning layer, a
pinned layer, a free layer and a non-magnetic layer inserted between the
pinned layer and the free layer, a longitudinal bias layer is connected
directly to a part of the free layer to apply a bias magnetic field to
the free layer, thus biasing a magnetization direction of the free layer
so that the magnetization direction of the free layer coincides with that
of the longitudinal bias layer.