Electrical resistors – Resistance value responsive to a condition – Magnetic field or compass
Patent
1983-06-30
1984-10-09
Albritton, C. L.
Electrical resistors
Resistance value responsive to a condition
Magnetic field or compass
360113, 324252, 365158, H01L 4308, H01L 4310
Patent
active
044764545
ABSTRACT:
Devices and circuits are described employing magnetoresistive materials exhibiting a negative .DELTA..rho. effect (.DELTA..rho.=.rho..parallel.-.rho..perp.). In these materials, the electrical resistivity .rho. of the material in a direction perpendicular to the direction of current through the material is greater than the electrical resistivity .rho..parallel. of the material in a direction parallel to the direction of the electrical current through the material. These are ferromagnetic materials exhibiting magnetoresistance in the presence of an electrical current through the material and a magnetic field applied to the material to magnetize it to saturation at room temperature. These devices and circuits have advantages over conventional devices and circuits employing magnetoresistive materials of the conventional type, in which .DELTA..rho. is a positive quantity.
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Aboaf Joseph A.
Klokholm Erik
McGuire Thomas R.
Albritton C. L.
International Business Machines - Corporation
Sears C. N.
Stanland Jackson E.
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