Title :
Performance and Stability of Soft Magnetic Elements for Electronic Article Surveillance
Author :
Brauer, Stephan F. ; Roseman, Morton ; Brüning, Ralf
fDate :
5/1/2007 12:00:00 AM
Abstract :
A simple figure of merit is proposed to compare the performance of soft magnetic elements for electronic article surveillance (EAS) applications. Annealing experiments were carried out to quantify the evolution of soft magnetic properties of amorphous-metal and Permalloy ribbons used in the library EAS industry. By fitting the kinetics of coercivity change to a simple model based on a uniformly distributed range of activation energies, the room-temperature kinetics of the amorphous elements is predicted
Keywords :
Permalloy; amorphous magnetic materials; annealing; coercive force; electronic equipment manufacture; soft magnetic materials; surveillance; 293 to 298 K; NiFe; activation energy; amorphous metal ribbons; annealing; coercivity; electronic article surveillance; figure of merit; library EAS industry; permalloy ribbons; room temperature kinetics; soft magnetic materials; Amorphous magnetic materials; Annealing; Coercive force; Fitting; Kinetic theory; Libraries; Magnetic properties; Soft magnetic materials; Stability; Surveillance; Amorphous magnetic materials; Permalloy; annealing; soft magnetic materials; surveillance;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.892656
