Bias-free symmetric dual spin valve giant magnetoresistance tran

Electrical resistors – Resistance value responsive to a condition – Magnetic field or compass

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32420721, 360113, H01L 4300, G01B 714, G01B 537

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active

057059730

ABSTRACT:
A giant magnetoresistive dual spin valve sensor employs at least one magnetic biasing layer located adjacent to an antiferromagnetic layer in the spin valve structure which includes two pinned ferromagnetic layers. The antiferromagnetic layer simultaneously pins the biasing layer and the ferromagnetic layer nearest the antiferromagnetic layer. This structure eliminates the bias point offset present in prior dual spin valve sensors.

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