Spin valve magnetoresistive head with spun valves connected in series

A spin valve magnetoresistive head comprising:

• a first spin valve device having a first magnetic free layer and a first magnetization pinning layer magnetized in a first direction, said first layers being separated by a first non-magnetic intermediate layer;
• a second spin valve device formed on said first spin valve device, said first and second spin valve devices being separated by an insulating layer, said second spin valve device having a second magnetization free layer and a second magnetization pinning layer magnetized in a second direction, said second layers being separated by a second non-magnetic intermediate layer, said second direction being in anti-parallel to said first direction;
• and
• a pair of first electrodes including a one first electrode and another first electrode, each said first electrode being connected near opposite sides of said first spin valve device, said opposite sides of said first spin valve device being separated in a longitudinal direction of said first spin valve device;
• and
• a pair of second electrodes including a one second electrode and another second electrode, each said second electrode being connected near opposite sides of said second spin valve device, said opposite sides of said second spin valve device being separated in a longitudinal direction of said second spin valve device, said one first electrode being connected to said one second electrode, and said another first electrode being insulated from said another second electrode.