Magnetostrictive element for use in a magnetomechanical...

Details Magnetostrictive element for use in a magnetomechanical... Magnetostrictive element for use in a magnetomechanical...

G - Physics

08

B

G08B 13/24 (2006.01) H01F 1/153 (2006.01) H01L 41/20 (2006.01)

Patent

CA 2269041

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.

L'invention concerne un élément magnétostrictif destiné à être utilisé dans un marqueur magnétomécanique de surveillance d'article, et formé par un premier recuit (22) d'un alliage (28) métallique amorphe, comprenant du fer et du cobalt à raison d'environ 5 à 45 en pourcentage atomique de cobalt, en présence d'un champ magnétique de saturation (33); et par un deuxième recuit de l'alliage (28) en l'absence du champ magnétique de saturation.

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