Heterogeneous magnetoresistive layer

Details Heterogeneous magnetoresistive layer Heterogeneous magnetoresistive layer

1990-08-13

1991-08-27

Lateef, Marvin M.

Electrical resistors

Resistance value responsive to a condition

Magnetic field or compass

H01L 4300

Patent

active

050436937

ABSTRACT:
A magnetoresistive material includes discrete units of magnetostrictive mrial separated from one another by one or more gaps. In one class of embodiments, magnetostrictive particles are embedded in a phase-separated nonmagnetostrictive matrix. In one embodiment a magnetoresistive article is made by co-sputtering particles of a magnetrostrictive material and a quantity of a nonmagnetostrictive material onto an nonmagnetostrictive substrate. The magnetostrictive particles are spaced from one another by distances in the range of 10 to 100 angstroms. In another embodiment, a magnetoresistive article is made by employing relatively large magnetostrictive electrodes separated by a small gap on a nonmagnetostrictive substrate. Magnetic field sensors employing such articles are also provided.

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patent: 4827218 (1989-05-01), Meunier et al.

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