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.