A flux guide type includes a magnetoresistive device for reading a signal flux,
and a flux guide for transmitting the signal flux to the magnetoresistive device.
The flux guide includes a laminated film that includes a ferromagnetic layer, a
non-magnetic layer and a ferromagnetic layer in this order, and the two ferromagnetic
layers in the flux guide have antiparallel directions of magnetization with respect
to the non-magnetic layer.