A GLASS-COATED AMORPHOUS MAGNETIC MICROWIRE MARKER FOR ARTICLE SURVEILLANCE

摘要

A magnetic marker for use in an article surveillance system, and an electronic article surveillance system utilizing the same are presented. The marker comprises a magnetic element formed by at least one microwire piece made of an amorphous metal-containing material coated with glass. The microwire piece has substantially zero magnetostriction, coercivity substantially less than 10A/m, and permeability substantially higher than 20000.