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) : Edelstein, Alan S
Report Date : 27 Aug 1991
Pagination or Media Count : 7
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.
Descriptors : ELECTRODES, MAGNETIC DETECTORS, MAGNETIC FIELDS, MAGNETOSTRICTION, MATERIALS, PARTICLES, SUBSTRATES
Subject Categories : Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE