Accession Number:

ADD015146

Title:

Heterogeneous Magnetoresistive Layer.

Descriptive Note:

Patent, Filed 13 Aug 90, patented 27 Aug 91,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1991-08-27

Pagination or Media Count:

7.0

Abstract:

A magnetoresistive material includes discrete units of magnetostrictive material 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 magnetostrictive 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.

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE