Composite magnetic head

A composite magnetic head comprising:

• a magnetoresistive head comprising:
• a lower magnetic shield disposed on a substrate;
• a lower gap layer;
• a first ferromagnetic layer;
• a non-magnetic layer;
• a second ferromagnetic layer;
• an anti-ferromagnetic layer having both ends whose width is narrower than that of the second ferromagnetic layer;
• first electrode layers disposed on the second ferromagnetic layer at both the ends of the anti-ferromagnetic layer;
• magnetic domain control layers disposed respectively on the ends of a stack of layers consisting of the lower magnetic shield, the lower gap layer, the first ferromagnetic layer, the non-magnetic layer, the second ferromagnetic layer, the anti-ferromagnetic layer, and the first electrode layers;
• second electrode layers disposed respectively on the magnetic domain control layers;
• and
• an upper magnetic shield disposed on the second electrode layers and the stack of layers by way of an upper gap layer;
• and
• an inductive magnetic head disposed on the magnetoresistive head by way of an insulation layer.

A composite magnetic head comprising:

• a magnetoresistive head comprising:
• a lower magnetic shield disposed on a substrate;
• a lower gap layer;
• a first ferromagnetic layer;
• a non-magnetic layer;
• a second ferromagnetic layer;
• an anti-ferromagnetic layer disposed on a central portion other than both ends of the second magnetic layer;
• first electrode layers disposed respectively on both ends of the second ferromagnetic layer;
• magnetic domain control layers disposed respectively on the ends of a stack of layers consisting of the lower magnetic shield, the lower gap layer, the first ferromagnetic layer, the non-magnetic layer, the second ferromagnetic layer, the anti-ferromagnetic layer, and the first electrode layers;
• second electrode layers disposed respectively on the magnetic domain control layers;
• and
• an upper magnetic shield disposed on the second electrode layers and the stack of layers by way of an upper gap layer;
• and
• an inductive magnetic head disposed on the magnetoresistive head by way of an insulation layer.