G - Physics – 08 – B
Patent
G - Physics
08
B
G08B 13/24 (2006.01) H01F 1/153 (2006.01) H01L 41/20 (2006.01)
Patent
CA 2163185
A self-biasing magnetostrictive element for a magnetomechanical EAS marker is formed by first annealing a ribbon of ferromagnetic material in the presence of a magnetic field applied in a transverse direction relative to the ribbon's longitudinal axis, and then annealing the ribbon a second time in the presence of a magnetic field applied in the direction of the longitudinal axis. The twice-annealed ribbon exhibits remanent magnetization along the longitudinal axis and has plural magnetic domains situated along the longitudinal axis. The orientation of magnetization in each domain is canted by .theta.° < 90° from the ribbon axis with the direction of canting alternating from domain to domain.
Ho Wing
Liu Nen-Chin
O'handley Robert
Sensormatic Electronics Corporation
Smart & Biggar
LandOfFree
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