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US 6,387,549 B1Granted
Magnetic sensor
AssigneeNEC Corporation
InventorsTakeshi Obata, Takashi Manako, Yuichi Shimakawa
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Abstract
A high-sensitivity magnetic sensor capable of detecting a nonequilibrium spin, uses an almost-spin-polarized ferromagnetic oxide in a high-quality trilayer arrangement including an intermediate layer made of a conductive nonmagnetic oxide not reacting with a ferromagnetic metallic oxide and having a lattice matching between a spin injection layer and a spin detection layer.
Claims20
A magnetic sensor comprising:
- a spin injection layer and a spin detection layer respectively constituted of a spin-polarized oxide ferromagnetic material;
- and
- an intermediate layer constituted of a nonmagnetic conductive oxide held between the spin injection layer and the spin detection layer,
- wherein the intermediate layer directly contacts, and lattice matches, the spin injection layer and the spin detection layer, free of any reactive layer therebetween.
1 more element
Dependencies are inferred from the claim text.