Title: Magnetostrictive element for use in a magntomechanical surveillance system
Application Number: 97199062 Application Date: 1997.10.22
Publication Number: 1244939 Publication Date: 2000.02.16
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G08B13/24
Applicant(s) Name: Sensormatic Electronics Corp. Address:
Inventor(s) Name: Liu Nen-Chin
Attorney & Agent: wang sibeng
Abstract:
    A magnetostrictive element for use in a magnetomechanical article surveillance marker is formed by first annealing (22) an amorphous metal alloy (28), such alloy comprising iron and cobalt with the proportion of cobalt being in the range of about 5 to about 45 atomic percent, in the presence of a saturating magnetic field (33) and then second annealing the alloy (28) in the absence of the saturating magnetic field.
Time: 8
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