Magnetoresistive effect type reproducing head and magnetic disk apparatus equipped with the reproducing head

摘要

A magnetoresistive effect type reproducing head is formed by stacking a lower magnetic shield (12) made of magnetic material, a lower inter-layer insulation film (14), a magnetoresistive effect type element (15) for detecting magnetic field by using a magnetoresistive effect, an upper inter-layer insulation film (14'), and an upper magnetic shield (13) made of magnetic material, on a substrate (11) in this order, wherein a resistivity of at least one of the lower and upper magnetic shields is more than 200 mu OMEGA . cm. <IMAGE>