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 made of magnetic material, a lower inter-layer insulation film, a magnetoresistive effect type element for detecting a magnetic field by using a magnetoresistive effect, an upper inter-layer insulation film, and an upper magnetic shield made of magnetic material, on a substrate in this order, wherein the resistivity of at least one of the lower and upper magnetic shields is more than 200 muOMEGA.cm.