TRANSVERSE MAGNETIC FIELD ANNEALED AMORPHOUS MAGNETRANSVERSE MAGNETIC FIELD ANNEALED AMORPHOUS MAGNETOMECHANICAL ELEMENTS FOR USE IN ELECTRONIC ARTICLTOMECHANICAL ELEMENTS FOR USE IN ELECTRONIC ARTICLE SURVEILLANCE SYSTEM AND METHOD OF MAKING SAME E SURVEILLANCE SYSTEM AND METHOD OF MAKING SAME

摘要

A ribbon-shaped strip of an amorphous magnetic alloy is heat treated, while applying a transverse saturating magnetic field. The treated strip is used in a marker for a pulsed-interrogation electronic article surveillance system. A preferred material for the strip is formed of iron, cobalt, silicon and boron with the proportion of cobalt exceeding 30% by atomic percent.