Accession Number : ADD012547

Title :   Method of Making a Miniature Scale Periodic Permanent Magnet Array and Miniature Scaled Periodic Permanent Magnet Array so Formed.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Cadieu,Fred J ; Cheung,Tak D

Report Date : 06 Oct 1986

Pagination or Media Count : 13

Abstract : A miniature scale periodic permanent magnet array is made from a magnetic material having a high intrinsic coercive force and a magnetic material having a low intrinsic coercive force by depositing alternating layers of the high and low intrinsic coercive force materials, exposing the layered structure to a strong in the film plane magnetic field to saturate the layers, applying a reverse in the film plane field to the layered structure of a magnitude just sufficient to reverse the magnetic moments of the magnetic material having the low intrinsic coercive force, and removing all external magnetic fields; the resulting magnetization state being one of oppositely directed moments in successive layers. A gap region is etched into the layered structure in which periodic reversing magnetic fields are located. (Patent Applications)

Descriptors :   *PATENT APPLICATIONS, *ARRAYS, *PERMANENT MAGNETS, LAYERS, MAGNETIC FIELDS, MAGNETIC MOMENTS, MAGNETIZATION, MATERIALS, STRUCTURAL PROPERTIES

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE